Some people have certain substances in their sweat that can make it appear different colors such as yellow, fawn, green, cyan, red or black, clinically known as chromhidrosis. Diagnosis: 1, can occur at any age, persistent or intermittent appearance, emotional excitement such as fear, anger, anxiety often promote or aggravate. 2.More often meet the face (not the normal sweat gland distribution area, but the ectopic sweat gland presence), followed by the armpit, umbilicus and vulva. 3, the color of sweat varies, with yellow being the most common, and yellow sweat in the armpits is often combined with axillary hyperhidrosis. Sweat gland secretion of color and blue or green, such as injection of methylene blue can be blue sweat, iodide can make the sweat reddish, internal clofazimine (chlorpheniramine) can make the sweat red. Secondly, it can also be seen in brown, black, purple, brown, also accompanied by blood color is called blood sweat (hematohidrois). Blue sweat, green sweat can be seen in the copper industry workers. Clinical need to distinguish with the color of the sweat of the disease: 1, sweat as oil: sweat sticky as oil. Also known as sticky sweat. The source and flow of miscellaneous diseases rhinoceros candle. Sweat source and flow”: “a cloud of oil sweat, that is, sticky sweat.” Detailed sweating like oil strips. Sweat like beads like oil like rain, this is a dangerous sweating syndrome, similar to the syndrome. 2, stinky sweating: sweat gland secretion with special odor or salty sweat is decomposed after the release of the odor is called stinky sweating. Can be divided into systemic and localized two. Chinese medicine body odor, fox gas and fox odor belong to the scope of this disease. 3, sweat gland secretion body odor: people have two kinds of sweat glands, one is all over the body of the exocrine sweat glands, the other is clustered in the armpit and groin around the top secretion sweat glands, and the top secretion sweat glands is the most important maker of body odor, but the real trouble is not the secretion of this kind of sweat glands. Medical research has shown that sweat gland secretions are odorless, and it is only when they attach to the skin and react chemically with bacteria that they give off a smell. If bacterial activity is left unchecked, the bacteria will feed on the oils that leave the glands, and as the oils break down, they will give off an unpleasant odor. Men produce more body odor-causing oils than women because of the extra testosterone they produce, and men are sometimes less careful about personal hygiene than women, so they are more prone to body odor.