You could try a bit of reverse psycology and tell him if he wont see the doctor then it can't be that bad and you have no intention of pandering to his whim's anymore, you wont pick him up from work if he rings feeling ill, if he collapses then you'll just step over him etc etc see if that works!
Alternatively just call an ambulance if he collapses again.
Becky

I have said next time he collapses i'm ringing an ambulance, but I know it's a matter of seconds really, so by the time it got here he'd just say he was fine and I know for a fact he wouldn't go.

thats the only problem,they wouldnt be able to make him go,they could advise him to go but they couldnt make him

I know this is wrong wrong wrong, but, how about pulling a massive guilt trip, explain that your very worried about him (which I know you obviously genuinely are !) and as your are that worried it's making YOU ill. So you felt that for his own health and -your sanity- you rang NHS help line and asked for advice they stressed to you (go a bit OTT if you have to and think it will help) that he should see a doctor ASAP. I know it's lying and creating a bit of drama, but if it gets him to the doctor ..........

Tell him you've put all his symptoms into an online medical thing and it says he has brain cancer, if that doesn't get him down the doctors then knock him unconcious and call an ambulance and get them to look at him while he's out for the count!
Becky

are you being serious?

I have said it could be anything, and he keeps joking about his 'tumour', but in all reality we don't know, so it could be anything.

It seems the only way to get him there would be if he were out for the count Becky.

kel read this it may help,do any of the symptoms sound like this?-

http://hcd2.bupa.co.uk/fact_sheets/html/migraine.html

What is it with men
Well I wish you luck with whatever method you find to get him seen. Have you tried no sex til you go to a gp? :smt002
Becky

now no sex could be a good one,it says on that link that migraines can come on due to sexual arousal