A small patch of hairlessness on the head may be caused by trauma, ringworm, baldness, seborrheic alopecia and other diseases.
1. trauma: trauma may lead to scalp damage, local hair follicle destruction, missing, resulting in local hair can not grow, may appear on the head of a small piece of no hair situation.
2. Ringworm: usually caused by fungal infection, local inflammation destroys the hair follicles, so that the local hair can not be regenerated, resulting in a small piece of hairlessness on the head.
3. Patchy baldness: the cause of this disease is unknown, may be related to immunity, genetic, mental, endocrine and other factors, such as mental stress. Usually, a round or oval hairless area appears on the scalp, resulting in a small patch of hairlessness on the head.
4. Seborrheic alopecia: the cause of this disease is not known, may be related to heredity, androgens, etc., mental factors and other factors are usually the cause of the onset of the disease, resulting in frontal, top and other parts of the hair becomes thin, soft and gradually fall off, may also appear on the head of a small piece of the phenomenon of no hair.
It is recommended that patients with a small patch of hairlessness go to a regular hospital in time to get a clear diagnosis and follow the doctor’s instructions for treatment.