<unk> s <unk> s) are injuries or pain in the human<unk>  system, including the joints, ligaments, muscles, nerves, tendons, and structures that support limbs, neck and back.<unk> s can arise from a sudden exertion (e.g., lifting a heavy object), or they can arise from making the same motions repeatedly repetitive strain, or from repeated exposure to force, vibration, or awkward posture. Injuries and pain in the<unk>  system caused by acute traumatic events like a car accident or fall are not considered<unk> s.<unk> s can affect many different parts of the body including upper and lower back, neck, shoulders and extremities (arms, legs, feet, and hands). Examples of<unk> s include carpal tunnel syndrome, epicondylitis, tendinitis, back pain, tension neck syndrome, and hand-arm vibration syndrome.
Musculoskeletal disorder
Spinal disease
Central nervous system disease
Neurological disorder
Bone disease
Musculoskeletal injury
Brain damage
Pigmentation disorder