Chronic exertional compartment syndrome in the leg occurs when increased pressure within muscle compartments during exercise causes swelling, tingling, and numbness.

“there's um compartment syndrome is where there's increased pressure inside the compartments of the leg there's an acute situation what we call acute compartment syndrome which happens if you break the tibia um but there's also some people who run and during the Run they start to get some swelling of that of the leg and they even get some tingling and numbness and and it's because the muscles are in a very confined space so as you exercise the muscle gets fluid in it hypertrophies and people will develop those symptoms”