Hello, White patches on the skin commonly occurs due to diet insufficiency. You should take nutritious & balanced home made food rich in calcium, vitamin E and D. Take ginger juice and stay well hydrated. You can apply Vitamin E ointment on the area affected regularly. Avoid exposure to sunlight. You are suggested to get clinically examined by a dermatologist so that few tests can be done, you may need oral medications. Treatment with ultraviolet light therapy, photo therapy or laser treatment is quite effective. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician