@She Cat , do you have hypermobile joints? Are you (or were you) really flexible?
Wot Friday wrote is probably the main explanation, but if you are very flexible, you probably also have very stretchy blood vessels, and that results in more frequent Reynaud's, and would exacerbate what Friday suggested.
The stretchy tissue would also explain things like greater susceptibility to the detatched vitreous humour, stretch marks and frequent joint dislocations.
Wot Friday wrote is probably the main explanation, but if you are very flexible, you probably also have very stretchy blood vessels, and that results in more frequent Reynaud's, and would exacerbate what Friday suggested.
The stretchy tissue would also explain things like greater susceptibility to the detatched vitreous humour, stretch marks and frequent joint dislocations.