Armpit hair with yellow adherents may be caused by sweating more, may also be the symptoms of armpit hair ringworm, need to be specifically analyzed. 1. Sweating more: patients show that there is more sweating in the armpit area, the sweat is not easy to evaporate, resulting in a noticeable odor, the armpit area sweat yellow or yellow adherents appear. It is common in young adults who love sweating, and the symptoms are aggravated after hot weather or strenuous exercise, so it is important to pay attention to timely cleaning. 2. Axillary lichen planus: If the patient has yellow adherents on the axillary hair, but no odor, axillary hair is not glossy and easy to break, then it is considered to be a symptom of axillary lichen planus, which is a disease caused by the infection of ciliated rod-shaped bacillus, and needs timely cleaning and treatment. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment. Patients should pay attention to personal hygiene, take baths, change clothes and eat a light diet.