18 Symptoms of Dangerous Health Conditions Hiding in Plain Sight

Redness on arms or legs

Rashes on arms and legs are not that unusual but when accompanied by pain or tenderness, it might be better to investigate the matter further, suggests Kouri, as it can be a sign of necrotizing fasciitis, also known as flesh-eating disease.

This refers to a dangerous bacteria infection that spreads rapidly, affecting the skin, the fat beneath the skin and the tissue covering the muscle. It may occur as a result of a small cut, bruise, injection or surgical site and can be accompanied by severe pain, fever, and vomiting.

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