Which of the following is a common sign of musculoskeletal disorders?

Severe pain is a hallmark indicator of musculoskeletal disorders. These disorders often involve the muscles, bones, joints, tendons, or ligaments, leading to various painful sensations. This pain can manifest as acute or chronic, may affect mobility, and often limits daily activities. The presence of severe pain can signal issues such as inflammation, injury, or overuse of musculoskeletal structures, making it a critical symptom that health professionals look for when diagnosing conditions like arthritis, tendinitis, or muscle strains.

Heightened energy levels, unexplained weight gain, and increased flexibility do not typically correlate with musculoskeletal disorders. Instead, they may be associated with different health conditions or patient circumstances unrelated to disorders of the musculoskeletal system. Therefore, the choice highlighting severe pain stands out as the most relevant sign of musculoskeletal disorders.