Delaying the introduction of solid foods can further prolong the allergy-free period in babies who inherit a tendency toward allergy. The reaction can cause dizziness, breathing problems, an asthma attack, hives, a sudden drop in blood pressure or unconsciousness. If not treated promptly and correctly, an anaphylactic reaction can be fatal. People subject to these reactions should carry an emergency kit containing the drug epinephrine for use at the first sign of symptoms. Cats are more likely than dogs to trigger an allergic response.
Loosened hair can become airborne and stick to walls and clothing.
Your doctor may be able to diagnose an allergy on the basis of your symptoms and exposure to allergens. For instance, if you have allergy symptoms only during ragweed season, you probably are allergic to ragweed. If you have year-round symptoms, the problem could be dust mites, pet allergies, or an allergy to a substance you come into contact with at work. You may also need some tests to identify the allergen. The simplest and most reliable is a skin test that scratches a drop of allergen extract into your skin.