<s>[INST] Hello I am 22 and have I have spontaneously developed a light patch of skin on my scalp with grey hair in the same area, having done research on the internet i found out it could be poliosis and vitiligo, i just want to confirm and check with a doctor if there are any trearment available. [/INST] Hi, You seem right. You probably have vitiligo on scalp. Vitiligo is an autoimmune disease. Exact cause is not known. The prognosis is totally unpredictable. In some patients it heals by itself without treatment. In others, it might increase in numbers and size...and spread to other areas. In few, it remains stable. For patients like you, I would like to advise line of treatment as follows.- Methoxsalen 25 mg tablet daily in morning- Camisole 50 mg at night-Apply methoxsalen solution in morning and at noon. Expose to sun after application.- atrocious lotion may be applied at nights treatment may be advised to continue for few months few years or till good result is achieved. I hope this would benefit i your treatment. You consult dermatologist and have perfect treatment. Thanks. </s>