In some healthy persons a loss of pigment occurs in certain sharply limited areas of the skin, including the hands and face. The involved areas look white in contrast to the surrounding areas of normally colored skin. This cosmetic defect is more noticeable, of course, in persons with dark complexions. The cause is not understood; and there is no satisfactory treatment.

See Odors. Offensive: A. Odors From the Skin. General sweating occurs in normal individuals when they are overheated (as in hot, humid weather), when they exercise strenuously, and sometimes when they sleep. A person in poor physical condition is more subject to sweating than one physically fit.  Sweating usually occurs when a person experiences severe pain, as m a heart attack due to coronary artery...

The common type of stiff neck from which a person suffers after" sleeping in the wrong position" or after being exposed to cold is an example of fibrositis. The cause is probably continued muscle tension which reduces the blood supply to the involved muscles. The same malady may cause muscle pain in the shoulder or lower back. A more chronic form of stiff neck occurs in torticollis (wry neck) which...

The rate and depth of a person's breathing are automatically controlled in relation to the body's need of oxygen. When the tissues do not receive enough oxygen, breathing is stimulated. Also when carbon dioxide accumulates in the tissues, breathing is stimulated. Either of these situations results in the attempt to breathe deeply and rapidly at the same time. This we call "shortness of breath." ...