Musculoskeletal (MSK) disorders affect the muscles, bones, joints, and tissues. In children, they may be due to infection, cancer, inflammatory arthritis, or progressive muscle disorders. MSK ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

More than 30 types of muscular dystrophy have been identified. They all cause problems with movement due to muscle protein defects caused by genetic mutations. Muscular dystrophy is a group of ...

Medically reviewed by Kelly Wood, MD Endocrine disorders happen when hormone levels are too high or too low. Fatigue and mood ...