Hair loss in children with trichotillomania is usually reversible, but if the plucking is prolonged, it may damage the hair follicles, which in turn affects the growth of the hair. Trichotillomania in children is a very common phenomenon and usually recovers very quickly after plucking. This is mainly due to the fact that children’s bodies are in the developmental stage, so the hair will grow again soon after plucking. However, it should be noted that if the hair is plucked for a long period of time, the hair follicles may be damaged, which may affect the growth of hair. In this case, parents are advised to bring their children to the doctor for examination, to understand the causes of hair pulling addiction, and then follow the doctor’s instructions for targeted treatment. In life, common causes include mental illness, hypothyroidism, calcium deficiency, baldness and so on. In addition to the need for active treatment, parents should also accompany the child to supervise and correct the child’s hair-pulling behavior in a timely manner.