Final answer:
Compartment syndrome is the medical term for a dangerous increase in pressure within muscles, which can cause significant tissue and nerve damage if untreated. It often requires surgery to relieve the pressure.
Step-by-step explanation:
The medical term that describes a dangerous increase in pressure within the muscles is compartment syndrome. Compartment syndrome occurs when excessive pressure builds up inside an enclosed muscle space in the body, usually because of swelling or bleeding after an injury. This increased pressure can impede the flow of blood to and from the affected tissues, which can result in oxygen starvation of the muscle cells and potential damage to nearby nerves.
Early detection and treatment of compartment syndrome are critical to prevent permanent injury. Treatment typically involves surgery, known as a fasciotomy, to relieve the pressure. If left untreated, the condition can lead to long-term impairment, tissue necrosis, or amputation.