Causes

The cause of chronic exertional compartment syndrome isn't completely understood. When you exercise, your muscles expand in volume. If you have chronic exertional compartment syndrome, the tissue that encases the affected muscle (fascia) doesn't expand with the muscle, causing pressure and pain in a compartment of the affected limb.

Some experts suggest that how you move while exercising might have a role in causing chronic exertional compartment syndrome. Other causes might include having muscles that enlarge excessively during exercise, having an especially inflexible fascia surrounding the affected muscle compartment or having high pressure within your veins.