I have a thickening of my left eardrum, ct scans are negative for cholestoma , I have ear fullness and during the day it feels like pressure comes and goes. Almost like swimmers ears. Had an audiogram and my hearing is about 10 dcb lower than normal. I do wear hearing aids. The hearing loss in my left ear has in the last few months. Also feels like I have an earplug in my ear. Wondering why my eardrum is thickened and what could cause - what disease. no rupture and temps was fine - no fluid in ear.