Decongestants are also commonly used to treat nasal allergies. They relieve nasal congestion by shrinking blood vessels in the nose. Like antihistamines, they are available with or without a prescription. Oral decongestants may cause irritability and sleeplessness in some people. When decongestant sprays are used too often or for too long, rebound congestion can occur.
Rebound congestion means even greater nasal stuffiness after the medication wears off.
Anti-inflammatory sprays may be used to relieve the nasal symptoms caused by inflammation resulting from allergies. When used as prescribed, under the supervision of a doctor, anti-inflammatory nasal sprays can be an important treatment option for people suffering from nasal allergies. Anti-inflammatory nasal sprays help fight inflammation. Like antihistamines and decongestants, anti-inflammatory nasal sprays are effective for many people with nasal allergies. Anti-inflammatory nasal sprays may cause nasal burning, nosebleeds, headache, or sore throat in some people.