Small patches of non-growing hair on the child’s head may be a symptomatic manifestation of certain diseases, such as spotted baldness, vitamin D deficiency rickets, zinc deficiency, ringworm of the head, and so on.
1. Pemphigus: Pemphigus belongs to autoimmune diseases, the hair follicles in the growth period will enter the regression and resting phase prematurely, resulting in sudden loss of hair and growth inhibition. A small patch of hair on the child’s head that does not grow may be spotted baldness, which may be related to genetic susceptibility.
2. Vitamin D deficiency rickets: insufficient sunlight, insufficient vitamin D supplementation in food and other factors can cause vitamin D deficiency rickets. In the early stage, it is mostly seen in infants within 6 months, which is characterized by irritability, excessive sweating, occipital baldness, etc. It may appear that there is a small piece of the child’s head that does not grow hair, and if not treated in time it may cause bone deformities.
3. Zinc deficiency: zinc is one of the essential trace elements, insufficient intake or metabolic disorders caused by zinc deficiency, resulting in loss of appetite, hair loss, skin roughness, etc., can be caused by the child’s head with a small piece of hair, may also lead to retardation of intellectual development.
4. ringworm of the head: ringworm of the head is a common cause of scalp scaly rash in children caused by dermatophyte infection, children often appear round scales and alopecia areata, which can cause a child to have a small piece of hair on the head, the scales of the affected area or the hair shaft of the potassium hydroxide smear examination or fungal culture can help to confirm the diagnosis.
There may also be other reasons for children not growing hair in small patches on the head, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.