Ask a Doctor: What's the difference between normal reaction and allergic reaction to insect stings?

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Bug bites and stings are an unfortunate part of enjoying life outdoors. For most of us a bite or sting is a temporary annoyance but for some they are life-threatening. CHCMS member Dr. Lee Perry, Chattanooga Allergy Clinic, explains when a bite or sting needs medical intervention and how you can protect yourself if you have severe reactions to either. Click here to read to his advice.