OK, panic solved. Apparently this is an OLD mac issue that Apple still have not resolved. The Itch thing had nothing to do with it.
If it happens to you, turn off the computer (don’t do a restart), wait a minute, then after pressing the power button press Command/Option/P/R at the same time during power up and Bluetooth come back.
Mods, kill the thread if you like, I’ll repost one that is not a flat out panic and include the solution.
Might be worth checking your Battery stats/cycles cus your Mac may not be holding PRAM settings on shut down which can indicate a need for a new battery .