Allergy
Allergies cause a wide range of symptoms, from the common problems that everyone has heard of such as a runny nose, nasal congestion, sneezing; watery, itchy, red eyes; and itchy ears, to less obvious problems like a tickle in the throat, cough, asthma, wheezing, shortness of breath, hives, eczema, bee sting reactions, and so forth. Fatigue is also common in allergy season. The older antihistamines which cause drowsiness didn't help with fatigue but now the newer antihistamines generally don't cause drowsiness.
People develop allergy problems because of an overactive immune system in which certain gamma globulins are overproduced by the body. Gamma globulins are normally present to fight bacterial infections. In the case of allergies, one of the gamma globulins (called IgE) functions abnormally and views the allergens (e.g. cat dander) as being a foreign bacteria - so the IgE attempts to "kill" it. When IgE attaches to the pollen, a barrage of chemicals including histamine are released into the body from cells called Mast cells, and as a result patients are left with allergic symptoms.
Typically your history of allergy problems is the most important thing that a doctor evaluates in an allergy evaluation, and a good allergist will spend a lot of time going through your history. After doing a careful evaluation, including a physical exam, your allergist will discuss treatment and possibly performing various tests which we'll talk about later. There are a variety of treatments and medications which we can suggest to help you. The most important thing to do in treating allergy problems is avoidance of the allergens that commonly cause problems.
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