Severe asthma with fungal sensitisation (SAFS) is a form of severe asthma in which the immune system is sensitised to one or more fungi, such as Aspergillus. This fungal sensitisation can contribute to airway inflammation and difficult-to-control asthma symptoms. SAFS is not the same as a fungal infection of the lungs.
New to SAFS? Start with our main guide to severe asthma with fungal sensitisation (SAFS), which explains what SAFS is, how it is investigated and the approaches used to manage it.
This hub brings together more detailed information about SAFS, including fungal sensitisation, severe asthma, eosinophils, biologic medicines, inhaled treatments, flare-ups and steroid treatment.
Topics in This Hub
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Biologics and Long Term Side Effects
July 14, 2025
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