Hair loss has a variety of clinical causes, if seborrheic alopecia, may be this hair loss has a familial, hereditary tendency to cause. Because this kind of hair loss patients at the same time with familial, or relatives appear similar hair loss. When the patient has familial factors, this hair loss occurs under certain stimulating conditions, such as staying up late or eating seafood, spicy and sweet food frequently, which may lead to the aggravation of this hair loss. There is also the possibility of baldness, the cause of baldness and the patient's mental stress, excessive fatigue or and the patient's other illnesses and other causes related to the fight, but also may be the patient's overthinking led to the occurrence of baldness. There are also cases where hair loss is not caused by these factors, but by infectious factors or other disease factors.

In the clinic, if the infectious factors lead to folliculitis baldness, mainly due to bacterial infection and lead to sudden folliculitis. If it is infected with fungal formation of tinea capitis, it may also cause hair loss, but this hair loss is permanent hair loss. Or it may be due to the patient suffering from lupus erythematosus or dermatomyositis, etc. This condition may also cause immune alopecia. It is also possible that the patient has a localized scleroderma, resulting in edema of the epidermis in the hair area, or causing the manifestation of collagenization, which damages the hair follicles and can also cause hair loss.