Think I'm being discriminated against at work

I think this is key to your current situation. I think it ties you into the work hrs as approved by the doctor. Can you get this changed?


I very much doubt it. This was the initial basis of my problem. I just wanted normal, straightforward part time. But because I mentioned my illness they turned it into a reasonable accomodation request.

This means I can't do overtime, can't apply for other full time jobs that come up etc (which is every single new position) so essentially I am going to end up pidgeon holed in my current position with no real room for choosing to come back full time or promotion unless I get clearance by a doctor first.
 
It might definitely be worth challenging the overtime thing in the meantime, maybe with support from your own doc.

The full-time thing will be trickier all right.