This document discusses peanut allergies including symptoms, diagnosis, causes, epidemiology, treatment, uncommon foods that may contain peanuts, and prognosis. Symptoms of peanut allergies include itchy skin, shortness of breath, nausea, and diarrhea. Diagnosis involves consulting an allergist who can properly diagnose the allergy. Peanut allergies are caused by an immune system overreaction to peanut proteins. While there is no permanent cure, avoiding peanuts and carrying an epinephrine pen can help reduce allergic reactions.