Dermatophytosis and excessive dandruff are closely related. Tinea capitis is caused by a fungal infection that proliferates on the scalp, causing the keratin layer of the scalp to proliferate, and the phenomenon of excessive dandruff can occur. Tinea capitis is a multiple disease that affects the patient’s health and can also induce other diseases, such as leprosy and scabies. If you get a haircut, you should dispose of the shaved hair in a timely manner to avoid infection from other people, disinfect your haircutting tools, and wash your hair with warm water every day. Tinea capitis is contagious, so it is important to take precautions against it. It is also important to avoid eating irritating foods such as fried, greasy, spicy, coffee, etc., and to quit anything too sweet, which can breed dandruff in your daily life. Don’t pour shampoo directly on your head, you should rub out the foam before washing, don’t stimulate your scalp too much, and actively use antifungal medications to treat ringworm.