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Understanding Allergies: Causes, Symptoms, and Treatments

March 4, 2026 10 Minute Read Time

Allergies are hypersensitive immune responses to typically harmless substances called allergens, including pollen, dust mites, pet dander, certain foods, and medications.

Common symptoms include sneezing, itching, runny or blocked nose, watery eyes, skin rashes, and, in severe cases, difficulty breathing or anaphylaxis.

Diagnosis may involve skin prick tests, blood tests, or elimination diets to identify triggers.

Avoidance of known allergens is the primary preventive strategy. Treatments include antihistamines, corticosteroids, decongestants, and in some cases, immunotherapy (allergy shots) to build tolerance.

Severe allergic reactions require immediate medical attention with epinephrine injections.

Understanding allergy management helps reduce symptom severity and improve quality of life.