Symptoms of ALLERGIC REACTION

The symptoms which develop depend in part on how the allergen is presented to the body, whether through respiration, ingestion on inoculation. Allergic rhinitis causes nasal itching and sneezing. Itchy, red eyes develop. Food allergies may cause itching and swelling of the mouth and throat. Nausea, vomiting and diarrhea may develop. Severe reactions can lead to a rash, swelling and shortness of breath. Drug allergies typically cause the rash. Nausea and diarrhea are common. Swelling and wheezing may also occur. Anaphylaxis, the most severe form of allergic reaction, develops when someone is extremely sensitive to a particular allergen. There is a generalized response in the body, with shortness of breath, difficult breathing, decreased blood pressure, rashes, swelling, and possible loss of consciousness. Death may occur.