Gray Hair in Young Man

I am 23 years old and have a worsening problem with grey hair. At 18, a few strands of hair slowly started to turn grey from the tips (not the roots). The graying would spread to the rest of the hair till it was completely grey. Over the past 5 yrs the grey hairs have increased and I now have about 30 grey strands all in the same area, in an area of about a few square inches. I don’t have grey hair anywhere else on my head and do not know how to stop it. I have been taking multivitamins and get plenty of exercise as well. Also, it seems odd that the grey hair is all concentrated in one area. Please advise me as to what you feel could be causing this and what I should do to treat it.
Thank you.

People gray in sections of the scalp before it spreads to other areas. I have seen people who had a single patch of gray hair in an otherwise normal head of hair that is dark. This could be in people who are very, very young (children have it at times). This is a genetic variation when it occurs. Other than the use of hair dye, there is nothing that can be done. You call this a problem and from a social point of view it clearly can be, but from a medical point of view, the hair at this point on your scalp is completely normal. If you do not like what is happening to you, you can use a variety of safe hair dyes to solve the problem.