Allergies
Monday, April 14, 2003

An allergic reaction can cause complications ranging from a rash or teary eyes to life-threatening reactions called anaphylaxis. In today’s Sixty Second Housecall, Dr. Ken Davis presents the first in a five-part series on allergies.

In an allergic reaction, the body’s immune system overreacts to substances that are not usually harmful. People with allergies generally fall into two categories—those who experience mild discomfort, possibly in the form of a rash or other physical symptoms, and those with life-threatening reactions when exposed to a substance.

The first exposure to the allergen causes a mild immune response that sensitizes the immune system to the substance. The next time the person is exposed to the allergen, the revved-up immune system overreacts. This may result in mild symptoms such as itching, sneezing and watery eyes. If the reaction is severe, you could experience severe breathing problems, lowered blood pressure and even death.

When the allergen enters the body, it triggers antibodies, which bind to cells that release substances called histamines. This histamine release causes the allergic symptoms.

There are several treatment options to reduce this over-reaction of your immune system. We will be discussing these options all week. For more information, log onto wtva.com and click on Sixty Second Housecall. For North Mississippi Medical Center, I’m Dr. Ken Davis.