I started on HRT this year and have noticed extreme hair loss. This was listed as one of the side effects (loss of scalp hair). I stopped the medication. Will my hair come back. It is extremely thin to the point of seeing my scalp through. I see tiny hairs in the bright light, but wondering if that is a good sign or not. Has anyone else had this happen with HRT. It was Femhrt, which is estrogen and progestin. However, I read that just the Estrogens also list this side effect, so I am afraid to take anything at all. trixie9