I noticed a while ago that my tinnitus was at screaming pitch after I had a nap. I was at a loss to understand why, so I did some research and found this article ( a bit long winded) which explains why taking forty winks can actually make tinnitus worse! No more naps for me I hasten to add.
One medical authority on tinnitus was also asked why tinnitus can be louder after a nap. Here is his reply:
'Lots of theoretical and speculative possibilities here. Dr. Jastreboff feels that the issue is one of neurotransmitters being somewhat dependent on the amount of sleep - especially REM sleep. Me? I see the reticular formation as having a significant role in the often-observed increase of tinnitus perception after a nap. The reticular formation is a primitive structure in the brain stem. It's a "vital sign monitor". When you wake from a nap or from sleep, the RF checks to see whether or not you are alive! It looks for heartbeat, respirations, blood pressure, temperature - basic bodily signs. It does not care whether or not these signs are good or bad - just that they are present. Since tinnitus is part of "normal" body function in an individual suffering with tinnitus, the RF checks to see whether or not tinnitus is present. If it doesn't find tinnitus, the RF seeks it with a vengeance - - especially in the post-nap state, when there has been inadequate REM sleep and when - therefore - the RF is on "high alert" that something might not be quite right. Theoretically - very theoretically - this RF hyperactivity in seeking tinnitus, which it equates with life, results in temporarily markedly augmented tinnitus perception.'