Hair loss due to heat on the top of the head is considered to be related to undesirable stimuli and pathologic factors. 1. Undesirable stimuli: too much pressure in working life and study, frequent dyeing and perming of hair or use of low-quality shampoos may cause stimulation of the scalp, leading to heat on the top of the head, and will also have an impact on the growth of hair, leading to hair loss. 2. Pathological factors: In addition to this, pathological factors, such as abnormal thyroid function or severe malnutrition, lead to a lack of nutrients for the hair, which eventually falls out. Seborrheic dermatitis, which causes excessive oil on the scalp, may also lead to hair loss. It is recommended to pay attention to the cleanliness and hygiene of the scalp, improve bad habits, choose the right shampoo, if necessary, go to the hospital dermatology department for examination, but also with the doctor’s advice to give treatment.