The first step is to clarify the diagnosis. In the case of androgenic baldness, most patients can achieve different results after timely and correct treatment, including the cessation of further hair loss or even an increase to varying degrees. In the case of baldness, plucking fetish and ringworm, they can heal spontaneously or recover completely after treatment. In scarring alopecia, because the hair follicles are completely destroyed and hair cannot regrow, timely treatment aims to prevent the increase or expansion of bald patches.