Check the symptoms
First of all you need to check the symptoms for an allergy to mildew or mold. Many of its symptoms are similar to hay fever, dermatitis and asthma. If you have running nose, swelling on face, itching eyes, constant coughing due to dry throat then you have allergy to mildew. Some other symptoms include hypersensitive reaction when looking into sunlight and nasal congestion.
Measures to prevent allergies to mildew inside your house
Keep humidity level low inside your house as mildew needs humidity to grow. You can use an air conditioner or dehumidifier to lower humidity levels inside your house or even workplace.
Remember to change its filters regularly and clean it on daily basis.
If your house is carpeted then remove it and use wood or any hard flooring.
Use vacuum cleaners with HEPA filters when cleaning your house.
You should add more windows in your house and should not leave unburned wood lying around your house.
Also check sewerage blockages in your house.
Measures to prevent allergies to mildew outside
Mildew usually occurs in winter and thus it is recommended to avoid outdoor activities during this season if you have this allergy.
You should also prefer indoor activities in dry or windy conditions.
Remember that a filter mask and appropriate clothes are preferable keeping mildew spores away.
Note that you need to stop doing tasks which spread mildew spores e.g. lawn mowing.
Get medication in case of severe allergies
In case you allergic reaction to mildew get serious, you need to take proper medication. You can get decongestants or antihistamines to recover quickly. It is easily available in pharmacies near you.
For high level of allergies to mildew, corticosteroids should be taken. Leukotriene blockers can also be used for similar purposes. Remember that both of these medications lower your body sensitivity to mildew. These blockers are also available in different forms but you are strongly advised to seek a doctor advice before using them.