Hair pulling may cause hair loss, scalp relaxation, folliculitis and other hazards. 1. Hair loss: hair pulling will cause localized damage to the hair follicles in the scalp, unlike natural shedding, the hair follicles may not continue to grow after severe damage, and severe localized hair loss can occur. 2. Scalp relaxation: due to the close connection between the hair and scalp, pulling the hair off will pull the scalp and cause pain, which may lead to scalp relaxation in the long run, so that the scalp loses its elasticity and ductility. 3. Folliculitis: After removing the hair, the hair follicles will be exposed to the air due to the loss of hair cover, which may allow bacteria, fungi and other microorganisms to enter, thus inducing folliculitis, and in severe cases, local pain, swelling, fever and other symptoms will occur. In addition, it is recommended that patients do not pull out the hair, the hair itself has a metabolism, to a certain extent can fall out by itself, and then grow back again. If the above phenomenon occurs, it is recommended to go to the hospital in a timely manner, and follow the doctor’s instructions for treatment to avoid delaying the condition.