Chronic Fatigue Syndrome Practice Test 2025 – All-in-One Guide to Master Your Exam Preparation!

Sudden weight gain is least likely associated with Chronic Fatigue Syndrome (CFS). CFS is primarily characterized by persistent fatigue that is not alleviated by rest, along with a range of other symptoms such as muscle weakness, cognitive difficulties, and sleep disturbances. While some individuals with CFS may experience fluctuations in weight due to changes in activity levels or appetite, sudden weight gain is not a hallmark symptom of the condition.

On the other hand, persistent fatigue is a core feature of CFS and is fundamental to its diagnosis. Muscle weakness is also commonly reported and can occur alongside fatigue, as the body's overall energy levels and physical resilience are affected. Sleep difficulties, such as unrefreshing sleep or sleep disturbances, are prevalent in individuals with CFS and can exacerbate the overall fatigue and other symptoms experienced. This demonstrates a clear connection between these symptoms and CFS, further reinforcing why sudden weight gain does not fit within the primary symptom profile of the syndrome.