Allergy (Patient Counselling Guide)

Allergies are hypersensitive reactions of the body against substances(called allergens) which are normally harmless but can trigger an allergic reaction in sensitive individuals. An allergic reaction may ensue after an allergen eg, dust, pollen, food, medicine, and animal dander, has come into contact with the skin or the eye, are inhaled, eaten, or injected.Manifestations of an allergic reaction may take several forms: respiratory allergies (eg, asthma, allergic rhinitis, or hay fever), intestinal allergies(eg, vomiting, abdominal pain, and diarrhea especially in infants and children), skin allergies (eg, mild skin reddening to urticaria, hives, or dermatitis), and may be commonly observed in various areas of the skin including the eyes (allergic conjunctivitis). Serious allergy could result in anaphylactic shock which requires emergency treatment.

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