Mould and asthma

Mould is a common allergic trigger for asthma, along with dust mites, pets and pollen.

Damp indoor and outdoor areas with mould can trigger asthma symptoms in some people. Mould is commonly found in bathrooms, fridges, and areas with poor air circulation, such as walk-in and built-in wardrobes, and bedrooms with ensuite bathrooms. Mould also encourages dust mite growth.

Avoid allergic triggers

Reducing exposure to your allergen triggers may improve your asthma control and make your asthma symptoms easier to manage. However, complete allergen avoidance does not cure asthma.

Being aware of which allergens cause asthma symptoms is an important part of asthma management. You should make efforts to reduce or avoid allergen exposure if:

• your doctor has confirmed that you have an allergy to the trigger
• exposure to that trigger causes your asthma symptoms
• you are motivated to try several allergen exposure reduction measures – following just one measure is unlikely to make a difference.

Allergen avoidance or reduction strategies should be used in combination with your recommended medicines and do not replace your doctor’s advice. Continue to use your medications as directed and ensure you have an up-to-date asthma and/or allergy action plan.

Advice for minimising mould

• Remove visible mould by cleaning with naturally fermented white vinegar solution (mould is not always visible and some porous surfaces may need to be removed and discarded).
• Use high-efficiency air filters – these may be integrated in air-conditioning, heat-recovery ventilation systems, or in air purifiers.
• Ensure adequate natural ventilation including the use of extractor fans.
• Seal leaks in bathrooms and roofs.
• Clear overflowing gutters and blocked under floor vents.
• Remove indoor pot plants (which promote mould growth).
• Dry or remove wet carpets.
• Treat rising damp as soon as it is detected.
• Avoid the use of organic mulches, and compost heaps.
• Consider using a dehumidifier to help remove excess moisture from the air in your home.

Important reminder

• Ensure you regularly see your doctor and keep your asthma and allergy action plans up to date.
• Consult your doctor about a referral for allergy testing if you think you have an allergy.
• Ensure you know how to use your medications correctly and that they are not expired.

Disclaimer
It is important to note that information contained in this fact sheet is not intended to replace professional medical advice. Any questions regarding a medical diagnosis or treatment should be directed to a medical practitioner.