Highly Variable. Allergy, broadly defined is hypersensitivity to what is usually an innocuous exposure in the general population. It is primarily directed against the protein in the substance. Symptoms can vary from rhinitis, dermatitis, hives, bronchospasm, vomiting, diarrhea, and if very severe, anaphylaxis.
Yes. Allergy is often misused but yes there are different types. The most common ones are related to hay fever, asthma, itchy eyes, stinging insect, atopic dermatitis , and food allergies-conditions considered to be mostly caused by the ige antibodies. Another one is contact allergy which usually leads to itchy skin rash and is related to lymphocytes. Poison ivy and nickel allergy are just two examples.
Different Cartegorie. In general allergy medications are in several broad categories. Antihistamines ( like allegra, claritin, zyrtec that are taken by mouth and Astelin / patanase which are nasal inhaled antihistamines); steroids which can be oral (prednisone), inhaled for the nose or lungs and topically applied for the eyes and skin. Read more...