Damp, mould and aspergillosis in rented homes (UK)

Who this guide is for

People living with Chronic pulmonary aspergillosis and other long-term lung disease.
People living with Allergic bronchopulmonary aspergillosis or Severe asthma with fungal sensitisation.
Carers, family members, and support workers.
Clinicians and housing professionals seeking a patient-centred overview.

The key message

A damp home does not automatically cause aspergillosis. However, damp and mould can:

worsen airway inflammation and symptoms
trigger exacerbations in asthma/bronchiectasis
increase allergic-type reactions in sensitised people
make it harder to stabilise symptoms even with optimal treatment

This hub focuses on practical steps: recognising risk early, communicating effectively, understanding remediation quality, and using UK escalation routes.

How to use this hub

Start with Recognising a damp home to build an evidence base.
Read Health effects to understand patterns that support an environmental contribution.
Use Landlord communications to push for a safe plan, not cosmetic fixes.
Check Remediation & refusal to move if you’re being pressured to return.
Use Law & support for UK rights and escalation routes.

Important safety note

If you have severe breathlessness, chest tightness, wheeze, or features of anaphylaxis (for example lip/tongue swelling, throat tightness, collapse), seek urgent medical help. If you are repeatedly attending A&E with symptoms that seem worse at home, tell clinicians you are concerned about damp/mould exposure.

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Recognising a damp or mouldy home

Early warning signs (often missed)

Condensation on windows most mornings
Cold, clammy walls or cupboards; wardrobes that feel “damp”
Persistent musty odour (especially when returning home)
Peeling wallpaper, bubbling paint, cracking plaster
Recurring black staining on silicone/grout
Swollen skirting boards, warped flooring, rusting fittings

High-risk hidden locations

Behind wardrobes/sofas on external walls
Inside cupboards on outside walls
Under sinks, behind washing machines, around toilets/baths
Window reveals, behind curtains/blinds
Loft hatches and boxed-in pipework

Common causes (useful when speaking to landlords)

Water ingress (doors/windows, defective seals, roof, gutters, downpipes)
Plumbing leaks (slow leaks behind walls or under floors)
Ventilation failures (broken/weak extract fans, blocked vents)
Cold bridging and persistent condensation in poorly insulated areas
Previous flooding/leaks with inadequate drying

Quick evidence checklist (10 minutes)

Take dated photos of any mould, staining, peeling paint, wet patches.
Photograph likely sources: door thresholds, window seals, gutters if visible, extractor fans, vents.
Write down where the smell is strongest and when it’s worst (after rain, in winter, after showers).
Start a brief symptom note (see Page 3) and keep everything in one folder.
Report the issue in writing to your landlord/agent and keep screenshots/confirmation.

What not to do (for safety)

Do not scrape or disturb mouldy plasterboard or insulation yourself.
Do not rely on bleach-only cleaning as a “solution” (it may not address underlying moisture or embedded contamination).
Do not accept repeated “paint over and close the ticket” approaches without a cause-and-fix plan.

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Your rights, the law, and UK support organisations

Key legal frameworks (plain English)

Fitness for human habitation: rented homes must be safe and fit to live in. Damp and mould can make a home unfit.
Local council enforcement: councils can inspect and require action where hazards exist (including damp and mould).
Social housing (England): stronger timeframes and duties apply for significant damp/mould hazards.

Note: housing law differs across England, Scotland, Wales, and Northern Ireland. Health risks are consistent UK-wide, but escalation routes can vary by nation.

Escalation pathway (practical)

Landlord/agent (in writing): report damp/mould + request an evidence-based plan (Page 4 templates).
Formal complaint: ask for escalation to stage 2 / senior review.
Environmental Health (local council): request inspection for damp/mould hazards if unresolved.
Ombudsman/regulator route: for social housing complaints after internal process.
Independent housing advice: Shelter or Citizens Advice can help with wording and next steps.

UK support organisations (start here)

Shelter (England) — housing rights and escalation support.
Shelter Scotland
Shelter Cymru (Wales)
Housing Rights (Northern Ireland)
Citizens Advice — practical support and signposting.
Housing Ombudsman — complaints for social housing providers (after the landlord complaints process).

What you do not need to prove

You do not need a blood test “proving mould exposure”.
You do not need to name a specific fungal species.
You do not need the landlord’s contractor to agree with you.

What matters is credible evidence of a hazard plus a plausible link to health deterioration (especially with clinically vulnerable occupants).

Suggested “resources” box for this hub

These are authoritative starting points you can list at the end of each page (optional):

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Remediation, verification, and refusal to move you

What “good remediation” should include

Cause fixed: leak/ingress/defect repaired, not just cleaned.
Drying: adequate drying time and moisture checks.
Material decisions: water-damaged porous materials removed where needed.
Safe work: dust/spore spread controlled (important for medically vulnerable households).
Verification: documented checks that work is complete and the home is safe.

Red flags (“bad remediation”)

Paint over staining or “mould spray” only
No drying plan, no moisture measurements
No documentation of what was removed/replaced
Work that creates dust without protection/containment
Refusal to provide any meaningful post-remediation checks

If symptoms worsen after remediation

Worsening symptoms can occur if contaminated materials were disturbed or if damp persists behind walls/floors. This is a strong indicator that the hazard may not be resolved.

Actions:

Document symptoms and healthcare visits (Page 3 template).
Ask landlord for written evidence of safety and remediation details.
Request escalation to Environmental Health if unresolved.

If the landlord refuses to move you (decant)

Use this framing:

The issue is not “repairs completed” — it is safety and health risk.
Ask: “What evidence shows the home is safe to occupy?”

Template request for temporary alternative accommodation

Subject: Request for temporary alternative accommodation (health risk / damp and mould)

Hello [Name/Team],

Despite remediation work, we are experiencing ongoing damp/mould concerns and worsening health symptoms in a clinically vulnerable household.

Please provide written evidence that the home is safe to occupy, including:
- confirmation the moisture source has been resolved,
- evidence of drying/moisture checks,
- what materials were removed/replaced,
- what post-remediation checks were completed.

Given the uncertainty around safety and the health impacts, we are requesting temporary alternative accommodation until the property can be demonstrated to be safe to occupy.

Kind regards,
[Name]

If you return “under protest”

If you have no alternative but to return, keep it in writing:

We are returning to the property due to lack of alternative accommodation. We do not accept that the damp/mould hazard has been resolved and will continue to document health impacts and seek independent assessment.

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How to raise damp and mould with your landlord (and get action)

Principles that prevent “cosmetic fixes”

Source control: stop the leak/ingress/defect.
Drying: dry building fabric, not just the air.
Safe remediation: remove/clean contaminated materials appropriately.
Verification: show the home is safe to occupy.

How to report effectively

Report in writing (email/portal) and keep everything.
Attach dated photos and a brief symptom timeline.
Use health-focused language: “damp and mould hazard”, “medical vulnerability”, “safe to occupy”.
Ask for timescales, named contact, and written findings.

Template email (copy/paste)

Subject: Damp and mould hazard – urgent investigation and repair plan (health impact)

Hello [Landlord/Housing Officer/Letting Agent],

I am reporting ongoing damp and/or mould at [address], affecting [rooms/locations]. This has been present since [date] and appears linked to [water ingress/leak/condensation/ventilation failure].

We have clinically vulnerable occupants in the household, including [brief: chronic lung disease / aspergillosis / severe asthma / bronchiectasis], and symptoms are worsening.

Please confirm in writing:
1) the inspection date and who will attend,
2) the findings (including likely cause),
3) the repair and drying plan (including timeframes),
4) what remediation will be undertaken (not just surface cleaning/painting),
5) how you will confirm the property is safe to occupy once works are completed.

Thank you,
[Name]
[Phone]

If you are told it is “lifestyle” or “just condensation”

You can reply calmly:

Thank you. We are doing reasonable ventilation and heating measures. However, the pattern and location suggest a building/ventilation defect that requires investigation and repair. Given medical vulnerability in the household, we need a written plan that addresses the underlying cause and confirms the home is safe to occupy.

When to escalate early

Repeated failed repairs, or mould returns quickly
Visible mould plus long-term damp patches
Health deterioration, repeated GP/A&E attendances
Pressure to accept repainting/bleach-only cleaning

See Page 6 for UK escalation routes and support organisations.

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Trials, systematic reviews, and state-of-the-science reviews from ~2016–2026 on damp housing, mould, and health

Executive summary (what 10 years of evidence consistently shows)

1) Damp and mouldy housing is a causal driver of respiratory disease

Strong, repeated associations with asthma incidence, asthma exacerbations, wheeze, chronic cough, and poorer lung function, especially in children.
Effects persist across countries, climates, and housing systems.
Evidence is strongest for asthma and allergic respiratory disease, but extends to bronchitis, infections, and symptom burden in people with existing lung disease.

2) Health effects are dose-related, not binary

Risk increases with extent, persistence, and visibility of dampness/mould (patch size, odour, condensation, repeated water damage).
No safe threshold has been identified → “any dampness matters.”

3) Mental health impacts are now well-established

Damp and mould exposure is associated with depression, anxiety, stress, sleep disturbance, and reduced wellbeing.
Pathways are both biological (inflammation, immune activation) and psychosocial (lack of control, stigma, housing insecurity).

4) Children are disproportionately affected

Strong paediatric evidence links damp homes to asthma development, poorer asthma control, and higher healthcare use.
Early-life exposure appears particularly important.

5) Damp housing is a marker of structural inequality

Concentrated in low-income, overcrowded, poorly maintained, or privately rented housing.
Acts as a health inequality amplifier, not just an environmental exposure.

6) Remediation works—but prevention works better

Interventions that fix the building (leaks, insulation, ventilation) improve symptoms.
Education alone is insufficient if the housing defect remains.

Thematic synthesis of the literature

1. Respiratory health (strongest evidence base)

Consistent findings across reviews (2016–2025):

Dampness and mould exposure increases:
- Asthma onset in children
- Asthma severity and exacerbations
- Wheeze, cough, breathlessness
Associations hold even after adjusting for smoking, socioeconomic status, and outdoor pollution.

Key insight

Damp housing is not merely an “asthma trigger” — it is a risk factor for developing disease, especially in childhood.

2. Childhood lung health (very strong, clinically relevant)

Paediatric reviews emphasise that clinicians routinely see children whose symptoms are driven or sustained by housing conditions.
Poor housing undermines:
- Controller medication effectiveness
- Self-management plans
- Long-term lung development

Clinical implication

Asking about housing conditions should be as routine as asking about pets or smoking in paediatric respiratory clinics.

3. Mental health and wellbeing (rapidly strengthening evidence)

Recent state-of-the-science reviews conclude:

Damp and mould exposure is associated with:
- Depression
- Anxiety
- Psychological distress
Effects persist even when respiratory disease is accounted for.

Mechanisms proposed

Chronic inflammation and immune signalling
Sleep disruption
Loss of control and “housing stress”
Fear for children’s health

Important shift

Damp housing is no longer viewed as purely a respiratory issue—it is a whole-person health exposure.

4. Measurement and exposure assessment (important but imperfect)

What works reasonably well

Visual inspection and standard dampness indices
Structured questionnaires (especially for asthma cohorts)
ERMI (Environmental Relative Moldiness Index) as a research tool

What does NOT yet exist

A clinically agreed safe exposure threshold
A single test that rules exposure in or out

Consensus

Absence of a perfect test does not mean absence of harm.

5. Built environment, ventilation, and remediation

Clinical trials and housing intervention studies show:

Improved ventilation and moisture control:
- Reduces indoor humidity
- Improves reported physical and mental health
Poorly executed energy efficiency measures can worsen damp if ventilation is not addressed.

Critical point

“Warmth without ventilation” is a known failure mode.

6. Housing as a social determinant of health

Major public health frameworks now explicitly define healthy housing as:

Warm
Dry
Well-ventilated
Free from mould and toxins
Secure and accessible

Shift in framing

Damp housing is not an individual lifestyle issue—it is a system-level health determinant.

What the evidence does not support (important for countering misinformation)

No convincing evidence that:
- “Detox” supplements treat mould exposure
- Binding agents reverse health effects
- Genetic susceptibility alone explains illness without exposure
Evidence strongly favours environmental remediation, not biomedical “workarounds”.

Implications for practice, policy, and patient support

For clinicians

Ask about damp and mould explicitly.
Document housing conditions when symptoms are unexplained or refractory.
Support patients with letters or reports—this is evidence-based advocacy, not speculation.

For public health & housing services

Damp housing remediation is preventive medicine.
Children’s respiratory health and mental health outcomes justify investment.

For patients

Symptoms are not imagined.
The problem is the building, not personal failure.
Improvement often requires structural change, not just treatment escalation.

Bottom line (10-year consensus)

Damp and mouldy housing causes avoidable disease, worsens inequality, and undermines medical care.
Fixing homes is one of the most effective—and underused—public health interventions available.

References

Bentley R, Mason K, Jacobs D, Blakely T, Howden-Chapman P, Li A, Adamkiewicz G, Reeves A.
Housing as a social determinant of health: a contemporary framework. Lancet Public Health. 2025;10(10):e855–e864. doi:10.1016/S2468-2667(25)00142-2. PMID: 40953578.
Moorcroft C, Whitehouse A, Grigg J.
Damp and mouldy home: impact on lung health in childhood. Archives of Disease in Childhood. 2025;110(6):419–421. doi:10.1136/archdischild-2023-326035. PMID: 39814530.
Gatto MR, Mansour A, Li A, Bentley R.
A state-of-the-science review of the effect of damp- and mold-affected housing on mental health. Environmental Health Perspectives. 2024;132(8):086001. doi:10.1289/EHP14341. PMID: 39162373.
Patti MA, Henderson NB, Phipatanakul W, Jackson-Browne M.
Recommendations for clinicians to combat environmental disparities in pediatric asthma. Chest. 2024;166(6):1309–1318. doi:10.1016/j.chest.2024.07.143. PMID: 39059578.
Punyadasa D, Adderley NJ, Rudge G, Nagakumar P, Haroon S.
Self-reported questionnaires to assess indoor home environmental exposures in asthma patients: a scoping review. BMC Public Health. 2024;24:2915. doi:10.1186/s12889-024-20418-8. PMID: 39434085.
Kozajda A, Miśkiewicz E.
Exposure to bioaerosol in the residential environment. Medycyna Pracy. 2024;75(6):545–560. doi:10.13075/mp.5893.01508. PMID: 39688367.
Vesper SJ.
The development and application of the Environmental Relative Moldiness Index (ERMI). Critical Reviews in Microbiology. 2025;51(2):285–295. doi:10.1080/1040841X.2024.2344112. PMID: 38651788.
Nabaweesi R, Hanna M, Muthuka JK, Samuels AD, Brown V, Schwartz D, Ekadi G.
The built environment as a social determinant of health. Primary Care. 2023;50(4):591–599. doi:10.1016/j.pop.2023.04.012. PMID: 37866833.
Grant TL, Wood RA.
The influence of urban exposures and residence on childhood asthma. Pediatric Allergy and Immunology. 2022;33(5):e13784. doi:10.1111/pai.13784. PMID: 35616896.
Coulburn L, Miller W.
Prevalence, risk factors and impacts related to mould-affected housing: an Australian integrative review. International Journal of Environmental Research and Public Health. 2022;19(3):1854. doi:10.3390/ijerph19031854. PMID: 35162876.
Wimalasena NN, Chang-Richards A, Wang KI, Dirks KN.
Housing risk factors associated with respiratory disease: a systematic review. International Journal of Environmental Research and Public Health. 2021;18(6):2815. doi:10.3390/ijerph18062815. PMID: 33802036.
Ali SH, Foster T, Hall NL.
The relationship between infectious diseases and housing maintenance in Indigenous Australian households. International Journal of Environmental Research and Public Health. 2018;15(12):2827. doi:10.3390/ijerph15122827. PMID: 30545014.
Wolkoff P.
Indoor air humidity, air quality, and health – an overview. International Journal of Hygiene and Environmental Health. 2018;221(3):376–390. doi:10.1016/j.ijheh.2018.01.015. PMID: 29398406.
Mendell MJ, Kumagai K.
Observation-based metrics for residential dampness and mold with dose–response relationships to health: a review. Indoor Air. 2017;27(3):506–517. doi:10.1111/ina.12342. PMID: 27663473.
Francisco PW, Jacobs DE, Targos L, Dixon SL, Breysse J, Rose W, Cali S.
Ventilation, indoor air quality, and health in homes undergoing weatherization: a randomized trial. Indoor Air. 2017;27(2):463–477. doi:10.1111/ina.12325. PMID: 27490066.
Barnes CS, Horner WE, Kennedy K, Grimes C, Miller JD.
Home assessment and remediation. Journal of Allergy and Clinical Immunology: In Practice. 2016;4(3):423–431.e15. doi:10.1016/j.jaip.2016.01.006. PMID: 27157934.
Chew GL, Horner WE, Kennedy K, Grimes C, Barnes CS, Phipatanakul W, Larenas-Linnemann D, Miller JD.
Procedures to assist health care providers to determine when home assessments for potential mold exposure are warranted. Journal of Allergy and Clinical Immunology: In Practice. 2016;4(3):417–422.e2. doi:10.1016/j.jaip.2016.01.013. PMID: 27021632.
Vesper S, Wymer L.
The relationship between Environmental Relative Moldiness Index values and asthma. International Journal of Hygiene and Environmental Health. 2016;219(3):233–238. doi:10.1016/j.ijheh.2016.01.006. PMID: 26861576.

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Indoor Damp, Ventilation & Aspergillosis

What a Major UK Evidence Review Means for Patients and Professionals

Why this paper matters

This large UK Health and Safety Executive (HSE) review examined whether microorganisms inside buildings (homes, offices, workplaces) can harm health — and what actually helps reduce risk.

Although it does not focus on a single disease, its findings are highly relevant to people living with aspergillosis, asthma, bronchiectasis, and other chronic lung conditions, as well as the professionals who support them.

Link to paper

The short answer (for everyone)

Yes — indoor environments can significantly affect lung health.
And ventilation and moisture control are central to reducing risk, especially for people vulnerable to fungal exposure.

What the review confirms (in plain language)

1. Indoor fungi are common — and not harmless

High confidence evidence

Many buildings contain airborne and surface fungi, especially when dampness is present.
The fungi most often found indoors include:

Aspergillus
Penicillium
Cladosporium
Alternaria

For aspergillosis patients, this matters because:

Aspergillus is not just an “outdoor mould”
Ongoing exposure can worsen symptoms, trigger inflammation, or complicate recovery
Even low levels may be problematic for sensitised or immunocompromised people

2. Dampness is a major driver of fungal exposure

High confidence

Damp buildings — whether due to leaks, condensation, or poor airflow — consistently show:

Higher mould growth
More fungal spores in the air
Stronger links to respiratory symptoms

Important point for patients:

You do not need to see black mould for damp to be affecting your lungs.
Mould smell (“musty odour”) is one of the strongest warning signs.

3. Ventilation is the most important protective factor

High confidence

Ventilation:

Dilutes fungal spores, bacteria, and viruses
Reduces moisture build-up
Lowers exposure for occupants

This applies to:

Homes
Flats
Offices
Other non-industrial indoor spaces

⚠️ The review highlights a key modern problem:
Energy-efficient, airtight buildings can unintentionally trap damp and fungi if ventilation is inadequate.

For aspergillosis patients, this means:

A “warm” home is not always a “healthy” home
Reduced airflow can increase fungal exposure even without visible mould

4. Indoor air also spreads infections

High confidence

Respiratory viruses (e.g. influenza, COVID-19) spread mainly through indoor air, especially when ventilation is poor.

This is relevant for aspergillosis patients because:

Viral infections can destabilise lung disease
Recovery may be slower
Secondary infections are more likely

Ventilation therefore protects against both fungal and viral risks.

5. Surfaces matter too — but air matters more

Medium–high confidence

Fungal material and microbes accumulate in dust, carpets, soft furnishings, and damp surfaces
Toilets and bathrooms can generate contaminated aerosols
Good hygiene helps, but cannot compensate for poor ventilation

For patients:

Cleaning alone will not solve a damp or ventilation problem.

What actually helps (evidence-based)

Strongest evidence

✔️ Adequate ventilation (natural or mechanical)
✔️ Fixing leaks and moisture sources
✔️ Removing mould-damaged materials
✔️ Preventing condensation on cold surfaces

Moderate evidence

✔️ HEPA air filtration (helpful but not a substitute for ventilation)
✔️ UV air disinfection (context-specific)
✔️ Touch-free fittings in shared buildings

⚠️ No single measure works on its own — combined approaches are needed.

Why this matters specifically for aspergillosis patients

This review strongly supports what many patients already experience:

Symptoms may persist despite treatment if exposure continues
Indoor environments can drive inflammation and relapse
“Just take your medication” is not enough if housing conditions are harmful

Importantly, the review recognises that:

Health effects vary by individual vulnerability
Those with asthma, bronchiectasis, aspergillosis, or immune suppression are more sensitive
There are no universally safe mould levels for everyone

What non-specialists should take from this

For GPs and clinicians

Damp and poor ventilation are legitimate medical risk factors
Persistent respiratory symptoms may be environment-driven
Asking about housing conditions is clinically relevant

For housing, environmental health & social care

Mould and damp are health hazards, not cosmetic defects
Ventilation failures can directly affect chronic disease
Energy efficiency must be balanced with respiratory health

For patients and carers

You are not “overreacting” if your home affects your breathing
Ventilation and moisture control are part of disease management
Evidence supports advocating for safer living conditions

Bottom line

This major UK review confirms that indoor dampness and poor ventilation increase exposure to fungi — including Aspergillus — and worsen respiratory health.
For people living with aspergillosis, building conditions are not secondary issues: they are part of the disease environment.

by GAtherton

Sinusitis in Patients with ABPA

When to suspect it, when to investigate, and when to refer

Why this matters

Patients with allergic bronchopulmonary aspergillosis (ABPA) are usually managed as having a lung disease. Diagnosis, monitoring, and treatment focus appropriately on the chest, immunology, and asthma control.

However, ABPA occurs within a single continuous airway, extending from the nose and sinuses to the lungs. Disease in the upper airway can coexist with, exacerbate, or complicate lower airway inflammation — yet sinus disease is not routinely assessed in ABPA care pathways.

This article outlines:

What is known about sinus disease in this context
Which symptoms should raise suspicion
When investigation or ENT referral should be considered
What GPs and non-specialists can reasonably do

The united airway: a brief reminder

The upper and lower airways share:

Type 2 (eosinophilic) inflammation
Immunoglobulin E–mediated immune responses
Common triggers, including allergens and fungi

Chronic rhinosinusitis is common in asthma and severe asthma, and treatment of sinus disease can improve lower airway outcomes in some patients.
ABPA sits within this same inflammatory spectrum, even though its management is lung-centred.

Sinus disease in ABPA: what is (and isn’t) known

What we know

Chronic rhinosinusitis is common in patients with asthma and severe asthma
Sinus disease may be symptomatic or relatively silent
ABPA guidelines do not mandate routine ENT review or sinus imaging
ENT involvement, therefore, varies widely between centres

What we do not know

Whether routine ENT assessment improves ABPA outcomes
Which ABPA patients benefit most from sinus intervention
The optimal timing for ENT referral in ABPA

As a result, clinical judgement remains central.

Symptoms that should prompt consideration of sinus disease

Sinusitis in ABPA patients does not always present with classic “blocked nose and facial pain”.
Key symptoms include:

Common but often overlooked

Persistent post-nasal drip
Foul, bitter, metallic, or “infected” taste in the mouth
Throat clearing, chronic cough
Thick or sticky mucus sensation
Symptoms are worse on waking or lying flat

More typical sinonasal features

Nasal blockage or congestion
Facial pressure or fullness
Reduced or altered sense of smell
Nasal crusting or discharge

Contextual clues

Poor durability of response to steroids or antifungals
Recurrent “flares” without clear chest triggers
Coexisting severe asthma or nasal polyps
Symptoms are worse in damp or mould-affected housing

A persistent foul taste in the mouth is a recognised symptom of chronic sinus disease, usually due to post-nasal drainage of inflamed secretions.

Damp homes and sinus disease

Living in damp or mould-affected environments is associated with:

Higher rates of chronic rhinosinusitis
Upper airway irritation and inflammation
Allergic sensitisation to fungal spores

In most cases, this results in inflammatory or allergic sinusitis, not invasive fungal infection.
Fungal involvement may act as an immune trigger, even when not labelled as “fungal sinusitis”.

Fungal sinusitis: rare vs under-recognised

It is important to distinguish between entities:

Type	Frequency	Key point
Invasive fungal sinusitis	Rare	Usually immunocompromised; dramatic presentation
Fungal ball (mycetoma)	Uncommon	Usually obvious on CT
Allergic fungal rhinosinusitis	Likely under-recognised	Requires active suspicion

Allergic fungal rhinosinusitis overlaps biologically with ABPA:

IgE-mediated
Eosinophilic inflammation
Thick allergic mucin

It is not routinely sought, so it may be under-diagnosed in at-risk groups.

What GPs and non-specialists can reasonably do

1. Take upper airway symptoms seriously

Especially in ABPA or severe asthma patients with:

Persistent post-nasal symptoms
Foul taste
Recurrent unexplained deterioration

2. Examine the nose and throat

Look for polyps, discharge, and crusting
Note mouth breathing or altered voice quality
Check dentition (to exclude dental causes)

3. Consider imaging when symptoms persist

CT sinuses (not plain X-ray) is the imaging of choice
Particularly appropriate if symptoms last >8–12 weeks or recur

4. Refer to ENT when:

Symptoms are persistent or progressive
CT shows significant sinus disease
There is a poor response to standard medical therapy
There is diagnostic uncertainty

Referral does not imply surgery — ENT input may be diagnostic or medical.

What this article is not saying

It does not suggest that all ABPA patients need an ENT referral
It does not claim that sinus treatment improves ABPA outcomes
It does not override existing guidelines

It does suggest that earlier consideration of the upper airway is reasonable in selected patients.

Key take-home points for clinicians

The airway functions as a single inflammatory system
Sinus disease may be subtle, under-reported, or atypical
A foul taste in the mouth is a meaningful symptom
Damp or mould exposure increases sinus disease risk
ENT referral is appropriate when symptoms persist or recur
Evidence gaps remain — but clinical vigilance is justified

In summary

ABPA is managed as a lung disease, but patients live with a whole airway.
Recognising when sinus disease may be contributing can help explain persistent symptoms and guide appropriate referral — without over-investigation or over-treatment.

by GAtherton

📢 Patient Speaker Opportunity – Breathe Clean Air Patient Conference 2026

The European Lung Foundation’s Breathe Clean Air Patient Conference is taking place online on 19 February 2026. This free event brings together patients, advocates, and experts to explore the impact of indoor air quality — including mould, moisture, and everyday environments — on lung health.

The organisers are looking for one patient speaker to share their lived experience in a 10-minute talk, either live or as a pre-recorded video. The theme is personal experience of mould, moisture or indoor air triggers affecting respiratory health — what it’s like day-to-day, how it’s impacted your life, and what advice you’d give others.

✨ This is a great chance to:

bring the patient voice to an international audience,
help raise awareness of how indoor air quality affects people with lung conditions,
and connect with others affected by similar issues.

The ELF team will provide support and a detailed brief ahead of the talk or video recording, so you won’t be doing it alone.

If you or someone you know might be interested, please let me know in the comments — happy to put you in touch with the organisers 🤍

by GAtherton

Potential respiratory hazards of fungal exposure in the residential indoor environment: a systematic review (2025)

Summary of the 2025 Systematic Review for Non-Specialists & Patients

Read full paper here: Potential respiratory hazards of fungal exposure in the residential indoor environment: a systematic review - ScienceDirect

What was this review about?

This review looked at all the scientific evidence from 1990–2025 on how indoor fungi (moulds) in homes affect people’s breathing and general respiratory health. It examined 94 studies, mapping out where fungi come from, which species appear most often, and how they affect the lungs, nose, throat, and immune system.

Key Findings in Plain Language

1. The biggest sources of indoor mould are dampness and building damage

Homes with water leaks, damp walls, damaged materials and poor ventilation are the most common sources of fungi—especially Aspergillus and Penicillium. These thrive in wet building materials, bathrooms, kitchens, drains, air-conditioning systems and even water dispensers.

2. Indoor fungi are strongly linked to a wide range of respiratory symptoms

Across many countries, indoor fungal exposure was associated with:

Asthma and asthma flare-ups
Allergic rhinitis (blocked or runny nose)
Chronic cough and throat irritation
Adenoid enlargement in children
Hypersensitivity pneumonitis (allergic inflammation of the lungs)
Reduced lung function
Even pulmonary haemorrhage in rare cases

The review shows that even everyday exposure—not just visibly mouldy homes—can worsen respiratory health.

3. Some fungi are more strongly associated with illness

Important associations include:

Aspergillus → asthma symptoms, COPD exacerbations, throat irritation, hypersensitivity reactions
Penicillium → asthma, allergic rhinitis, hypersensitivity pneumonitis
Alternaria → childhood asthma risk
Candida & Fusarium → present in wet areas such as bathrooms and may affect vulnerable individuals

4. The geographic picture is uneven

Most research comes from high-income, temperate countries. There are major evidence gaps in tropical and subtropical regions, where humidity is high and fungal exposure is likely worse. This limits current global understanding of risk.

5. Prevention works — but public awareness is low

Simple actions (cleaning, improved ventilation, addressing leaks, correct humidity ranges) can radically reduce fungal burden. One study showed 80–90% reduction in airborne mould counts after residents were given basic remediation advice.

What’s New or Important in This 2025 Review?

1. A fully integrated “source → species → disease → location” map

The review is the first to link fungal sources, the exact fungi found, the diseases they cause, and where the evidence comes from, creating a multi-layered evidence map. This helps identify:

Which household features pose the highest risk
Which fungi are clinically most important
Where research gaps exist

2. Highlights the major global research imbalance

It emphasises that very little evidence exists from low-income and tropical areas—where exposure may be far more severe. This is a call for equity and better global surveillance.

3. Shows that fungi may affect more than the lungs

The review notes new evidence that fungal exposure may also influence neurological and immune-mediated symptoms, suggesting mould exposure could have broader health effects than traditionally recognised.

4. Identifies major gaps in identifying which fungal species cause harm

Many studies only measure “mould level” without identifying the fungus. The review argues for better fungal detection technologies, such as:

Portable real-time samplers
Multi-omics (DNA, RNA, metabolites)
Long-term cohort studies

These tools could finally clarify which fungi cause which illnesses.

5. Strong emphasis on emerging technologies for prevention

Including:

UV and photocatalytic TiO₂ devices
Improved antifungal cleaning agents
Building materials designed to resist mould growth
Volcanic minerals and clays that absorb harmful compounds

Why This Review Matters (for Patients, Carers, and Clinicians)

1. It shows mould is not “just an allergy problem”

Indoor fungi can worsen or trigger asthma, COPD, hypersensitivity pneumonitis, chronic sinus issues, and may even influence immune and neurological health. This validates patient experiences where damp homes worsen symptoms.

2. It provides strong evidence for housing-related health advocacy

Patients can use this to:

Request landlord repairs
Support home assessments
Advocate for rehousing if severe mould is present
Justify humidifier/dehumidifier use, and ventilation improvements

3. It highlights the importance of early remediation

Even simple cleaning and remediation steps can dramatically reduce mould burden and symptoms—important for families, vulnerable groups, and those with chronic lung disease.

4. It gives clinicians a clearer evidence base

Respiratory teams can use this to:

Recognise when housing contributes to disease flare-ups
Understand which conditions are most strongly linked to indoor fungi
Make better-informed referrals for environmental health assessments

5. It builds a scientific foundation for future guidelines

The authors point out that national building codes, indoor air quality policies, and public health guidance lag behind the evidence—and this review is intended to inform future regulation.

Who Does This Help Most?

Patients with:

Asthma
Allergic bronchopulmonary aspergillosis (ABPA)
Aspergillus bronchitis
COPD (especially those with fungal-associated exacerbations)
Hypersensitivity pneumonitis
Children with recurrent respiratory infections
Anyone living in damp, mouldy, water-damaged, or poorly ventilated homes

Clinicians:

Respiratory physicians, GPs, ENT specialists, allergists, immunologists.

Policy & Housing Professionals:

Public health teams, environmental health officers, social landlords, housing associations.

Researchers:

Those developing diagnostics, fungal exposure studies, indoor air quality monitoring, or patient-centred environmental interventions.

by GAtherton