Illnesses that cause gray hair(सफेद बाल)
The vast majority of people with gray hair have age-related graying. However, sometimes graying hair indicates an illness, especially if it occurs at a particularly young age. Health problems that may be heralded by gray hair include:
- vitamin B12deficiency
- neurofibromatosis (also called Von Recklinghausen’s disease): this group of inherited diseases causes tumors to grow along nerves and abnormal development of the bones and skin.
- tuberous sclerosis: an uncommon, inherited condition that causes benign tumors in multiple organs (including the brain, heart, kidneys, eyes, lungs, and skin).
- thyroid disease
- vitiligo: this condition causes melanocytes (the cells at the base of hair follicles that produce color) to be lost or destroyed — perhaps because the immune system “misfires” and attacks the scalp rather than an infection.
- alopecia areata: a disorder in which patches of hair may be suddenly lost, especially the colored (non-gray) hairs. This may lead to “overnight” graying because previously present gray or white hairs suddenly become more obvious. When hair growth resumes, it may be white or gray, but colored hair may eventually return.