Possible causes of hair loss in boys include androgenetic alopecia, patchy baldness, resting hair loss, etc., which can be helped by medication and enhanced care. 1. Androgenetic alopecia: androgenetic alopecia, also known as seborrheic alopecia, is a common cause of hair loss in pubertal and post-pubertal boys, which is mainly characterized by symptoms such as thinning of hair, hair loss, receding of hairline and baldness. This kind of patients can apply minoxidil locally to help hair growth, and at the same time can take finasteride and other drugs to help regulate androgen levels in the body and improve hair loss. 2. Patchy baldness: hair loss caused by patchy baldness is often manifested as the sudden appearance of a piece of scalp or more than one piece of patchy hair loss with clear boundaries, and there is no obvious inflammatory reaction, scarring and other abnormalities at the site of hair loss. Such patients can apply minoxidil locally to help regrowth of hair, and oral prednisone and other hormonal treatments can be used for the progression of the disease. 3. Resting hair loss: Long-term late night, lack of sleep, mental stress, frequent perming and dyeing and other adverse factors will make a certain proportion of the hair growth phase to the resting phase of the rapid transformation, thus leading to the occurrence of resting hair loss. This kind of patients should pay attention to avoid staying up late, ensure sufficient sleep and a good state of mind, avoid excessive perming and dyeing, strengthen nutrition, etc., so as to help improve hair loss. The appearance of hair loss timely consultation. It should be noted that the above medication should be administered under the guidance of a physician to avoid adverse reactions.