Painful redness. (Indications).

Often stereotyped as temperamental, redheads may have another hallmark: a genetic sensitivity to pain. At a meeting of the American Society of Anesthesiologists in Orlando, University of Louisville (Ky.) researchers reported that natural redheads need about 20% more anesthesia than people with other hair colors. Anesthesiologists' anecdotal reports that redheads are harder to put under led the researchers to give the ...