Sep 8, - Adults with glue ear. Glue ear can occasionally develop in adults. It's diagnosed and treated in much the same way as children. If symptoms show no signs of improving after about three months, grommets can be put inside the ear to drain the fluid from it.Introduction · Causes · Diagnosis · Treatment. Jul 9, - Just that really- or maybe not. Back story: about seven weeks I had a cold, which then turned into a nasty cough. My left ear also felt 'full' at thi.