A bald patch of hair on the head may be caused by ringworm of the head, androgenetic alopecia, alopecia areata folliculitis and other causes.
1. Tinea capitis: Tinea capitis is usually a common disease caused by dermatophyte infection of the scalp, after the disease due to dermatophyte stimulation of local hair follicles, so that the hair follicles are destroyed, which will lead to the formation of local fibrous hyperplasia, so that the patient appeared on the head of the symptoms of a bald piece of hair.
2. Androgenetic alopecia: when in puberty, due to the body’s androgens are more vigorous, which will stimulate the local hair follicles to appear tiny, resulting in the shortening of the hair growth cycle, and ultimately make the hair follicles appear to atrophy and disappear, thus forming the symptom of a piece of bald hair on the head.
3. Alopecia Areata Folliculitis: If the scalp is not cleaned properly, it will lead to Staphylococcus aureus stimulation of the scalp, which will lead to chronic inflammation of local hair follicles, which will lead to the destruction of hair follicle stem cells, thus triggering the symptom of a bald head of hair.
When the patient has a bald patch of hair on the head, you need to go to the hospital in time for examination, after clarifying the cause of the disease, under the guidance of the doctor for symptomatic treatment.