Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
If your health deteriorates further then you will not be able to complete your planned move, much less do something drastic like move now.
If your environment has toxic fungus, you cannot live for a year there and expect to be in any condition to move, to apply for a visa, or perhaps to be out of the hospital. I am trying not to be alarmist, and would very much like the opinion of better informed readers on the relative danger/safety of your situation, but you need to examine how much you weigh the inconvenience of moving or doing something about the problem versus your health or existential risks.
I've moved four times in the last three years across three continents. I've been lucky enough to not be coping with migraines and to have enough cashflow to make it work. I only mention it to point out that it is eminently feasible.
Is there anyone you can stay with for say a week to see if your condition improves vis-a-vie the migraines?
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.