Hot&Spicy Food...And Your Mouth

I'm kinda guessing that I'm not the only one this happens to...
You eat a bunch of really spicy stuff. Then when your mouth is coated in capsaicin, or whatever makes stuff hot, you eat something warm, temperature warm, and the pain in your mouth increases? Is there a term for that? Does capsaicin make your pain receptors think you've burnt your mouthparts - kinda like when you burn your skin if you touch something warm it's tender?

I ate a whole bunch of Chaparrita habanero salsa on some tacos, and took a small forkfull of warm, white rice, and my mouth kinda went up in flames. It's happened before a bunch of times, and got me thinking all sciencey like and stuff.

The main thing is that capsaicin locks onto pain receptors -- specifically those for heat --and doesn't let go easily. So the pain will be cumulative

Did you know that it only affects mammals? Chiles evolved to have birds eat the fruits and spread the seeds.

This might be another part of your answer:

"Capsaicin alters the sensitivity of the pain receptors in your mouth, effectively lowering the temperature at which you feel burning pain."

From jumping horses to jalapeños: the science of spicy peppers

In 2003, I had a bad case of shingles on my back. The recommendation from my doctor at that point was to dry my back and apply a capsasum cream.

However, one morning, I was in a rush and applied the cream right after the shower. For two hours, I was in the most incredible pain as my back was burning It was the same way that I felt when digesting a 1/2 teaspoon of ghost pepper mustard.

I would agree that it does seem to heat up your mouth as well as your sinuses.