I am currently a final year grad student. Sometime last year, I developed severe pain in one of my hands which led to a lot of time lost. I have seen some of the best doctors in the country for my condition (I am doing my PhD at a hospital so that helped) but we have not been able to narrow down on any diagnosis. Through out this time my supervisor has been super supportive and helpful; he even helped me arrange a few consultations. My PhD committee (which monitors my progress among other things) has also been mostly supportive. A few months ago, the pain began to subside (could be on its own, could be medicines helping). I communicated this to the committee members last month (who have usually been concerned and periodically checking up on me).
A couple of weeks ago the pain is back suddenly and this time it is in both my hands. This has put me in a difficult spot work-wise and I feel that I might end up losing some more time if the pain persists.
Therefore, the premise of my question is: I have medically unexplained symptoms (MUS). In general people really have low tolerance for such conditions and often think "its all in the head".
My questions are:
1) How do I deal with telling my committee members that I am in severe pain once again? Given that I just told them last month that I was doing fine and that I do not have a diagnosis, I am afraid I might come across as someone using my illness as an excuse for reduced productivity.
2) I am due to submit my thesis in June. I am interested in applying for post-doctoral positions (most likely in Europe). Should I let my future boss know about my condition? I feel that it would be unfair to not let them know given that my pain can lead to (significant) loss of work time; however, since I do not even have a diagnosis I don't even know how should I go about disclosing it to them.
3) At this stage it looks like I might have to deal with pain on a long term basis. Should I expect discrimination (not legally, of course) in academia simply because I might not be as productive as other people? Any advise on how to deal with this kind of situation?
I have read some other related questions (for example, this) but I feel that my situation is slightly different given MUS.
Edit: I am currently doing my PhD in India