See More Symptoms
See all 597 symptoms in the PatientsLikeMe system shared by patients just like you.
Allergies Symptom Report
An allergy is an abnormal reaction by a person's immune system against a normally harmless substance. A person without allergies would have no reaction to this substance, but when a person who is allergic encounters the trigger, the body reacts by releasing chemicals which cause allergy symptoms.
Read more...
Report created on November 21, 2009.