opportunistic infection - any infection caused by a microorganism that does not normally cause disease in humans; occurs in persons with abnormally functioning immune systems (as AIDS patients or transplant patients receiving immunosuppressive drugs)
Why your 'flushing' could be a red alert to see your doctor. It is a normal body response that may occur when we are embarrassed, angry, excited, or experiencing other strong emotions. But 'flushing' - when the face, ears, neck and, occasionally, upper chest, take on a red colour, accompanied by a hot feeling - can also be a sign of a more serious underlying condition.
Why Do Some People Flush When Drinking Alcohol? You've probably seen it: the person who, after drinking one or two alcoholic beverages, suddenly turns red. At first, it looks like a simple blush, but as the person continues to drink, the blush slowly begins to cover his entire face and often even spreads to the neck and chest areas.