(HealthDay News) -- Allergic reactions are sensitivities to allergens. From animal dander to foods, allergens may cause hives, itching, a rash and other symptoms.
For a mild-to-moderate reaction, MedlinePlus mentions these first aid steps:
If the allergic reaction is severe, call 911 immediately.
Dangerous Sesame Allergy Affects Many Americans
Food Allergies Can Strike at Any Age
Allergy Med Singulair to Get 'Black Box' Warning Over Psych Side Effects: FDA
