Hi Alopecia areata is considered an autoimmune disease, in which the immune system, which is designed to protect the body from foreign invaders such as viruses and bacteria, mistakenly attacks the hair follicles, the structures from which hairs grow. This can lead to hair loss on the scalp and elsewhere In most cases, hair falls out in small, round patches about the size of a quarter. In many cases, the disease does not extend beyond a few bare patches Sunscreen creams to the scalp may be helpful OTC Minoxidil solution cream of 5% can be tried out which can be applied twice daily on the affected patch Have health diet Vitamin C and Vitamin B can be taken which is good for hair growth (vegetables and fruits consist aswell) Wish You Good Health Regards Dr Sridhar K