Chronic Fatigue Syndrome Complete Practice Test 2026

Chronic Fatigue Syndrome (CFS) is characterized by a significant and debilitating fatigue that cannot be explained by any underlying medical condition. One of the hallmark symptoms associated with CFS is widespread muscle pain, often referred to as myalgia. This muscle pain can vary in intensity and is typically accompanied by other symptoms such as fatigue, sleep disturbances, and cognitive difficulties.

The presence of widespread muscle pain in individuals with CFS affects both their physical and mental well-being, leading to a considerable reduction in their quality of life. The exact mechanisms behind the muscle pain are not fully understood, but it is believed to be linked to neuroinflammation and abnormalities in pain processing within the central nervous system.

The other possible answers do not accurately reflect the nature of muscle pain in CFS. While muscle mass and endurance can certainly be impacted by CFS, the primary effect noted in individuals suffering from the condition is indeed the presence of widespread muscle pain.