Young people with thinning hair can be seen in seborrheic alopecia, malnutrition alopecia, ringworm and genetic factors. 1. Seborrheic alopecia: also known as androgenic alopecia, with the body androgen secretion level abnormalities caused by hair follicle miniaturization, hair follicle atrophy, in the treatment of the main oral finasteride tablets (men), spironolactone tablets (women), as well as topical minoxidil tincture treatment. 2. Malnutrition alopecia: due to prolonged malnutrition, the supply of nutrients to the hair will be affected, so that the growth of hair is limited to a certain extent, thus leading to thinning and fine hair. 3. Tinea capitis: due to the impact of ringworm bacteria on the scalp and hair follicles, hair loss and breakage will occur in the clinic, and when the symptoms are severe, it will make the local hair look thin. 4. Hereditary factors: hair growth is affected by genetics, for the family has a similar genetic history of the population, there may be thinning hair. Young people with thinning hair may also be other reasons, it is recommended that the patient timely consultation, the specific circumstances of the consultation with the doctor.