Not sure if this is your issue but I was noticing some thinning along my hairline above my forehead and mentioned it casually when I was at the dermatologist last. He asked if I ever wore my hair back in a ponytail and I said yes -- especially during daily workouts. He said to stop due to pulling on the hair. I stopped and had hair growth return on no time. I thought I'd mention it because t's a pretty simple thing to try if you think the same could apply to you.
DD1 - 1996
DD2 - 1999
DD3 - 2005
Surfaces are for working, not for storing. - Peter Walsh