Hello there Robin and anyone else reading and relating to this....
So sorry I haven't responded to your posting for so long. In the meantime I have had my long hair cropped and have been trying not to think about it!
In answer to your question- personally I think it has a great deal to do with heat so it makes sense that this coincides with hot flashes. I was told by a trichologist that mine was hormonal and I should try and stay as cool as possible- that the sweat (yuk- sorry!) on my head was killing off the hair prematurely (I also do quite a bit of sport). I have been recommended the traditional Ayurvedic approach to diet- cooling foods etc- and it certainly seems to make sense and help a little. I have to say that I have not experienced cuts on my head but certainly lots of strange bumps which can feel quite tender...
I do hope this helps in some way!
All best wishes
Katjuschka