intolerance to noise is an annoying part of MS for me.
When we're at a social gathering, I have to excuse myself and go home.

My suggestion, which I am going to use from now on is to either use earplugs or cotton to lessen the impact on the hearing. I wear earplugs for women "Pretty in Pink" that fit my smaller ear canal when I sleep.

See if doing something along these lines helps a bit..