Drinking red and white on the body without itching, may be local capillary expansion or alcohol allergy caused by.
1. Capillary dilatation: alcohol contains ethanol, need to be metabolized by the liver, the liver of ethanol dehydrogenase can be converted into ethanol acetaldehyde, and acetaldehyde can promote the expansion of capillaries, part of the people can be manifested in the skin red and white. This situation does not require special treatment, alcohol slowly metabolized will disappear.
2. Alcohol allergy: the body lacks acetaldehyde converting enzyme resulting in an external skin allergy symptoms. Some people belong to the allergic body, and the body lacks acetaldehyde converting enzyme, resulting in acetaldehyde can not be converted into acetic acid metabolized out of the body. Acetaldehyde is present in the body for too long, stimulating capillary dilation and edema, appearing red and white but not itchy.
Different people have different degrees of tolerance to alcohol, when drinking alcohol on the body red and white without itching should be noted, control the amount of alcohol, if necessary, seek medical attention.