Obviously the hospital fulfills some kind of need. What can you replace it with so you don't require an admission? The place does not seem to be beneficial so why get traumatized all over again? Anyway, hospitals are limited in what they can do.

Perhaps, a medication review should be done or another one added (PRN) to help ease the thoughts.

It could also be stress or even boredom. When I feel overwhelmed or lose my sense of control my obsessiveness intensifies.