Ears may also become involved if the eustachian tube remains blocked. This causes decreased hearing, popping noises and, especially in children, may lead to ear infections. Eye irritation due to allergies may make it difficult or uncomfortable to use contact lenses. Removing dusty or moldy items from a bedroom and home may also help. Occasionally, the use of a HEPA-type room air filter may help provide relief from allergies.
Many people find they do well with antihistamines that contain chlorpheneramine.
Antihistamines may cause drowsiness and, if taken, care must be used when driving. They may also interact with other drugs, and they can be quite expensive. This requires testing by a specialist and then injection of tiny amounts of the offending allergens once or twice a week for several months to a year before they are effective.