Which of the following is NOT considered a sign or symptom of an MSD?

Headaches are not typically classified as a direct sign or symptom of a musculoskeletal disorder (MSD). MSDs primarily involve conditions affecting the muscles, tendons, ligaments, and nerves, often resulting from repetitive strain, poor posture, or injury. Common symptoms include pain, discomfort, or tingling specifically in the musculoskeletal areas, such as the back or limbs.

Back pain and tingling in the fingers can indeed reflect issues related to MSDs, as they often involve nerve compression or muscle strain in areas of the spine or limbs. Similarly, muscle strain is a direct manifestation of an MSD, as it describes the injury or discomfort arising from overuse or improper movement of muscles.

In contrast, while headaches can be influenced by various factors, including tension or stress, they do not fall under the category of symptoms directly associated with musculoskeletal disorders, therefore making headaches the correct choice in this context.