What is body odor? What is the reason?

1, body odor, also known as underarm odor, smelly sweat, etc. , is the patient's armpit, vulva, mouth sweat from apocrine glands (also known as apocrine glands), fatty acids higher than ordinary people, light yellow, thicker; When fatty acids reach a certain concentration, they are decomposed by bacteria on the skin surface, mainly staphylococcus, producing unsaturated fatty acids and giving off a bad smell. It is similar to the smell discharged from fox's anus, so it is often called body odor.

2, apocrine glands: Apocrine glands only exist in axilla, areola, umbilical fossa, anus, vulva, external auditory canal and so on. Except for the armpit, the function of this gland in other parts is extremely weak, resulting in little sweating. Sweat secreted by apocrine glands is sterile at first. Under the action of microorganisms, the organic matter in sweat decomposes to form short-chain fatty acids and ammonia with special odor, which leads to the occurrence of apocrine glands.

3. Hyperhidrosis: It occurs in the palm and sole and rubbing area. Small sweat is often colorless and tasteless. However, in the case of hyperhidrosis, sweat is interpreted by parasitic bacteria on the skin surface to release fatty acids and produce a special smell; Other substances such as garlic and arsenic can be excreted through exocrine glands, thus producing odor.

4, mental or nervous system damage (such as paranoia, schizophrenia, etc. ) will also produce smelly sweat.

5. The occurrence of bromhidrosis may be related to heredity.