Allergy: Allergy is an excessive sensitivity of the human body to some substances which are otherwise harmless. The allergens include dust, pollen grains, spores, furs, etc. Asthma and hay fever are examples of allergies. Rashes, itching, wheezing and sneezing are common symptoms of allergy.
Concept: First Aid - Cases: Burns, Bleeding, Fracture, Object in the Eye, Unconsciousness, Swallowing Poison, Snake Bite, Stings