The hot water in the bathroom has very low pressure for about a week now. The shower and kitchen sink are fine. Any ideas?

Clogged hot inlet in the mixing valve. Is it with cartridges or a stem or what

That's all greek to me. Not sure what you mean by cartridge, stem, and mixing valve.

OK I will try to set you up with a tutorial to help you unclog the inlet. Or would you rather call a plumber. It would help to have a picture or brand/model for the faucet. Try this for a start Cartridge Faucet Repair - Repair a Leaking Cartridge Faucet

It's a Pfister faucet with a handle for hot and a handle for cold. Does this help?

Maybe you can find it here Price Pfister - Bathroom Faucets | Bathroom Faucet, Tub & Shower, Showerheads Did you read the thread I posted in #4, should help

Yea, I read your post and I'm going to give that a shot and replace the cartridge in the handle.

Thanks a lot man! That was the problem. The cartridge had calcium buildup in it. Let the water run the excess calcium buildup in the line, replaced it, and it works now. Thanks again!

Anytime, we are always here