I've been on and off HRT for the last year and my hair is rapidly thinning at the sides and temples,I'm presently on Kliovance but thinking of coming off it as it's not helping with my anxiety and low moods and I'm pretty sure it's caused the hair loss. I have to be careful with any medication now as about 15 years ago I took a course of omeprozale for a stomach complaint then about 3 months later half my hair fell out, it came out in huge handfuls when I washed it but gradually grew back but never as thick as it had been.
I was lucky in the fact I had extremely thick hair. always hated it as it was so coarse and wiry, couldn't get a comb through it and wished I had thinner hair, be careful what you wish for!!!!
It was growing back ok ish but would always loose a lot in the autumn for some reason but now it's got bad again, can only be the hrt as I'm on no other medication, or maybe it's the menopause and I would have lost it anyway,it's so distressing I feel bad enough with the anxiety and mood swings without this as well.