Does the body burn more calories when you have pleurisy?

No. There is no relationship. Why would you ask? No, not a weight loss treatment.

Yes. The body may burn more calories during any acute or chronic inflammatory process in the body. With pleurisy the underlying cause may have a significant impact on your metabolic rate & hence the total calories burned. There is not a lot of scientific literature that exactly quantifies how many extra calories are burned in pts with pleurisy, but you should discuss it with your doctor to adjust diet.

Inflammation. I guess, but not incredibly faster compared to not having pleurisy...