Prednisolone tapering: mood changes, low cortisol and staying safe

Prednisolone can be an important treatment for some forms of aspergillosis, particularly allergic bronchopulmonary aspergillosis (ABPA). It reduces harmful inflammation, but it can also affect how you feel emotionally. This article explains why a change in mood during a steroid taper deserves to be taken seriously.

Can reducing prednisolone affect mood?

Yes, it can. Feeling unusually low, anxious, irritable, tearful, overwhelmed or unlike yourself can happen while taking prednisolone. It can also happen while the dose is being reduced. That does not mean the feelings are “all in your head”, nor does it prove that the taper is the only cause. Living with a long-term illness, poor sleep, pain, worries and difficult events can all affect mood too.

The important point is that a noticeable change in mood during a taper is real and worth mentioning to the team managing your steroids.

Why might this happen?

There can be more than one explanation, and they can overlap.

• Prednisolone can affect the brain as well as inflammation. Some people experience anxiety, irritability, sleep problems, low mood or mood swings while taking it. These effects are more likely at higher doses, but can occur at any dose.
• Glucocorticoid withdrawal syndrome. After longer-term treatment, the body has adapted to receiving steroid medicine. Lowering the dose can bring withdrawal symptoms such as fatigue, weakness, aches, sleep disturbance and mood changes. This is a recognised medical problem.
• Recovery of the body’s cortisol system. Long-term prednisolone can temporarily reduce the body’s own production of cortisol. Cortisol helps regulate blood pressure, energy, metabolism and the response to physical stress. Recovery differs greatly between people.
• A flare of the illness being treated. Symptoms of asthma, ABPA or another condition can return as the dose falls. Feeling physically worse can understandably affect sleep and emotional wellbeing.
• Everything else going on in life. Steroid-related changes and ordinary human stress are not mutually exclusive. A difficult period may feel much harder while your body is adjusting.

Withdrawal symptoms and adrenal insufficiency are not the same

They can feel similar, which is why it is not safe to diagnose yourself from symptoms alone.

A clinician may need to consider your dose history, the condition being treated and sometimes cortisol testing. The dose is often reduced more slowly as it approaches the amount of cortisol the body normally makes, but there is no single schedule that is right for everyone.

What should I do if I feel low or emotionally unstable during a taper?

1. Tell your prescribing team or GP promptly. Describe when symptoms began, recent dose changes, sleep, other physical symptoms and how much daily life is being affected.
2. Do not stop prednisolone suddenly or change the taper on your own. If a slower taper, a temporary pause or a short-term dose change is appropriate, this should be agreed with the clinician who knows your situation.
3. Keep the basics steady where possible. Take prednisolone exactly as prescribed (usually in the morning), try to protect sleep, eat and drink regularly, and let someone close to you know you are having a difficult time.
4. Ask about an adrenal plan if you have been taking steroids for weeks or longer. Your team can tell you whether you need sick-day rules, a steroid emergency card, testing or endocrinology input.

If you are admitted to hospital and cannot explain

A common worry is becoming too unwell, drowsy or confused to explain that you take, or have recently reduced, steroid treatment. This matters because people with known or suspected steroid-related adrenal insufficiency may need urgent steroid treatment during a serious illness, injury, operation, vomiting or diarrhoea.

Carry a Steroid Emergency Card if your clinician has advised one. It gives healthcare professionals essential information quickly. A short personal medical summary kept in your wallet and on your phone can also help. Include your diagnosis, current steroid and dose, recent taper, allergies, usual clinical team, emergency contact and any individual sick-day or emergency-injection plan.

Ask your team what should apply to you. Not everyone taking a short course of prednisolone needs an emergency card, but it is particularly important to discuss after longer-term treatment or if you have adrenal insufficiency.

When should I seek urgent help?

Contact NHS 111, your urgent clinical contact or your medical team the same day if you have a significant or worsening mood change, feel unable to cope, become confused, have frightening or unusual thoughts, or develop severe fatigue, vomiting, marked dizziness/fainting, worsening weakness or symptoms of low blood pressure.

Call 999 or go to A&E immediately if you have thoughts of harming yourself or ending your life. If you have known or suspected adrenal insufficiency and are seriously unwell—especially with vomiting, diarrhoea, severe infection, collapse or extreme weakness—follow your personal sick-day/emergency-steroid plan and seek emergency medical help.

A note for family and friends

Someone tapering prednisolone may seem more tearful, irritable, anxious or withdrawn than usual. A calm check-in can be genuinely helpful: ask how they are coping, listen without trying to minimise it, and encourage them to speak to their clinical team. If you are worried about their immediate safety, stay with them and get urgent help.

Further information

• NHS: Side effects of prednisolone tablets and liquid
• European Society of Endocrinology: patient leaflet on glucocorticoid-induced adrenal insufficiency

This information supports, but does not replace, advice from the clinician prescribing your steroids.