When I was little, i was in an accident that made me stay laid up in the hospital for about a month. Well as it was explained to me and how i've always taken it [because I was only 3 at the time] is that, having my head in that position for so long with the same part of my head against a pillow, killed the hair follicles in the back of my head, and ever since then, i've had a small bald spot in the back of my head. Is there anything I can do to regrow this little patch???