Scalp folds at the back of the head are mostly caused by poor local skin metabolism, and the human body’s endocrine disorders and have a certain relationship, can be caused by a lack of vitamins or trace elements, may also be caused by obesity or cervical spondylosis. Usually you can eat more food rich in vitamin E, D and a variety of trace elements, such as vegetables, fruits, nuts and fish, shrimp and shellfish, etc., and eat less high-calorie and greasy food, so as not to cause adverse effects on the skin. If necessary, you can go to the hospital to check the level of trace elements, and usually pay more attention to washing the head.