First aid for the treatment of mild to moderate reactions includes the following steps:
Over-the-counter antihistamines, such as diphenhydramine, can be taken to decrease the allergic response. Prescription medicines may be needed in some cases to open the airways. Steroids, such as prednisone, may be used to decrease swelling and open airways.
A severe allergic reaction is treated as above with a few extra measures.
Antihistamines can cause drowsiness. Prednisone can cause stomach problems, mood swings, and sleep problems. These side effects are generally very mild.
Medicines used to open the airways can cause shakiness and abnormal heart rate. These, too, tend to be mild. Epinephrine can cause significant anxiety, shakiness, and abnormal heart rate. This medicine is often administered in the doctor's office or emergency room.
Anyone who has a known serious allergic reaction should wear a medical alert bracelet at all times. This tag identifies the allergy. The substance to which the person is allergic should be avoided. Friends and relatives should be made aware of the allergy in case of an exposure or emergency. Those with an allergic reaction to a medicine should tell their healthcare provider.
The affected person should avoid the substance to which he or she is allergic. People with severe allergies may be given a medicine for injection in case of an exposure. Any new or worsening symptoms should be reported to the healthcare provider.