Allergy patients may develop post-nasal drip when exposed to allergens. Some of the most common allergens in the environment include grass, pollen, dust, mold, and pet dander. If a patient suspects they may be allergic to particular substances, they should visit an allergist, who can perform a skin test to determine precisely what substances the patient needs to avoid. Patients who experience post-nasal drip due to allergens may wish to use decongestants to relieve a stuffy nose and reduce mucus. Antihistamines can help relieve nasal symptoms. Doctors may also recommend periodic injections for more severe cases. Patients may be advised to modify their home environments by using a HEPA air filter and avoiding contact with pets. Bedding and toys should be washed frequently, and patients will benefit from the use of a home humidifier.
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