Faded Hearing When Tired? Part of Tinnitus or Just a Normal Thing?

I'm not sure if this is something that can be completely normal when one is tired, or if it's due to my tinnitus.

Sometimes, when I'm really exhausted after a long day, in the evening, it can happen that my hearing just slightly fades/dampens. It doesn't always happen though, and it always goes away when I wake up in the next morning.

My tinnitus is a high pitched hissing sound due to hearing damage (exposure to loud noise), although I haven't lost any hearing. Also, I've always had highly sensible ears, so in the end I'm not sure if it's just how my body reacts to tiredness, or if it's tinnitus related.

Anyone already experienced this?

Thanks

 

I’m the opposite, everything seems louder when I’m trying to sleep.