Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin. Symptoms of food allergy include abdominal pain, bloating, vomiting, diarrhea, itchy skin, and hives. Food allergies rarely cause respiratory (asthmatic) reactions, or rhinitis. Insect stings, food, antibiotics, and certain medicines may produce a systemic allergic response that is also called anaphylaxis; multiple organ systems can be affected, including the digestive system, the respiratory system, and the circulatory system. Depending on the severity, anaphylaxis can include skin reactions, bronchoconstriction, swelling, low blood pressure, coma, and death. This type of reaction can be triggered suddenly, or the onset can be delayed. The nature of anaphylaxis is such that the reaction can seem to be subsiding but may recur throughout a period of time.
aside from these ambient allergens allergic reactions can result from foods insect stings and reactions to medications like aspirin and antibiotics such as penicillin symptoms of food allergy include abdominal pain bloating vomiting diarrhea itchy skin and hives food allergies rarely cause respiratory (asthmatic) reactions or rhinitis insect stings food antibiotics and certain medicines may produce a systemic allergic response that is also called anaphylaxis; multiple organ systems can be affected including the digestive system the respiratory system and the circulatory system depending on the severity anaphylaxis can include skin reactions bronchoconstriction swelling low blood pressure coma and death this type of reaction can be triggered suddenly or the onset can be delayed the nature of anaphylaxis is such that the reaction can seem to be subsiding but may recur throughout a period of time