Hormone-dependent dermatitis, darkening of the skin during recovery is considered to be due to post-inflammatory hyperpigmentation or exposure to sunlight. Hormone-dependent dermatitis patients, darkening of the skin during recovery is generally the occurrence of post-inflammatory hyperpigmentation. Generally because of chronic dermatitis for a long time treatment is not cured, will gradually form the skin roughness, at the same time the skin color deepening, blackening and so on. It is also possible that during the recovery period, the patient is often exposed to ultraviolet radiation, which causes melanocytes to synthesize and secrete more melanin deposits in the epidermis, ultimately leading to skin darkening. It is recommended that the patient consult a doctor in time to identify the cause, and the doctor will clarify the cause of the disease and give targeted treatment.