Hair problems usually require consultation in the dermatology department. If the dermatologist needs the assistance of other doctors to handle the problem, he or she can consult other departments, such as immunology or hematology, etc. If the patient has symptoms such as flaky scalp and white hair, he or she can consult a dermatologist. If the patient has symptoms such as flaking scalp and graying hair, it may be seborrheic dermatitis or vitiligo, etc., so the patient can register with a dermatologist; the dermatologist can perform relevant examinations on the lesions to determine the cause of the disease and provide further treatment after a clear diagnosis is made. If hair loss is the first symptom of the patient and is not accompanied by other symptoms, it may be androgenetic alopecia, baldness, etc. The patient can first consult a dermatologist for a clear diagnosis and further treatment according to the condition. If alopecia is the first symptom but accompanied by other symptoms, the patient can also consult the dermatology department first. After careful examination, medical history and relevant tests, if the diagnosis of lupus erythematosus, anemia, etc. is confirmed, the patient can consult the rheumatology and immunology department or the hematology department again. If the patient has been diagnosed with baldness or other diseases that require hair transplantation, he/she can consult a dermatologist, who will be able to formulate a suitable hair transplantation plan according to the patient’s condition. Hair problems usually require consultation in the dermatology department. If the dermatologist confirms the diagnosis of autoimmune diseases or hematological disorders based on the patient’s specific accompanying symptoms, he/she can consult other departments to assist in the diagnosis and treatment; in addition, the patient can consult with the outpatient guide of the local hospital when consulting the doctor.