Aspergillosis

Aspergillosis is a group of conditions caused by Aspergillus, a mould found indoors and outdoors. Most people breathe it in without any problem. It mainly causes illness in people with existing lung conditions, such as asthma or past tuberculosis, or with a weakened immune system.

Last updated Nov 9, 2026

What it is

Forms include an allergic reaction in people with asthma or cystic fibrosis, a long-term infection in damaged lungs, and a rare but serious invasive infection in people with very weak immune systems.

Treatment depends on the form and may include antifungal medicines, steroids or, occasionally, surgery.

Common signs

  • Worsening asthma symptoms
  • A cough, sometimes with blood
  • Breathlessness, tiredness, weight loss
  • Fever in invasive infection

How it is usually diagnosed

  • Blood tests for antibodies and allergy markers
  • Chest X-ray or CT scan
  • Tests on sputum or samples taken during a bronchoscopy

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • CT and X-ray reports
  • Blood and sputum test results
  • A record of antifungal treatment and blood levels
  • Respiratory clinic letters

Questions to ask your doctor

  • Which form of aspergillosis do I have?
  • How long will treatment last, and how will we know it is working?
  • Should I avoid certain places, such as compost or building sites?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Coughing up a lot of blood
  • Severe breathlessness
  • High fever if your immune system is weakened

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources