Hi guys
I'm not real sure about a link between CH and a predisposition to mental illness.
Any chronic illness, especially one such as CH which causes a great deal of pain AND is largely misunderstood by society at large ("ye I get headaches like that, but I just pull myself together and get on with it....." etc etc) is bound to cause feelings of frustration, helplessness, why me?, what's wrong with me? etc which could trigger a depressive state.
Many years ago, a particular personality type was suggested as being link with CH -
Graham (1972) cited in Lance J & Goadsby P Mechanism and Management of Headache -suggested CH sufferers were "a hard drinking and hard smoking lot, ambitious and hard working, the prototype aggressive executive male type ... which conceals feelings of guilt, inadequacy and dependancy which shows itself in brief episodes of hysterical behaviour during a CH attack....". The same bloke also suggested a particular set of physical characteristics - apparantly we all look like lions!!!
Thankfully, numerous more recent studies have shown the above to be nothing but BS. CH suffers come from all different walks of life, with our personalities being as diverse and varied as our CH attacks.
sara