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 ...

Amyotrophic lateral sclerosis (ALS) affects the nerve cells in the brain and spinal cord that control muscle movement. Different types of ALS cause symptoms to begin in a certain part of the body and ...

The type 1 ryanodine receptor (RyR1) is an important calcium release channel in skeletal muscles essential for muscle contraction. It mediates calcium release from the sarcoplasmic reticulum, a ...

A mutation in the gene that causes fibrodysplasia ossificans progressiva (FOP) doesn't just cause extra bone growth but is tied to a problem in generating new muscle tissue after injury, according to ...

For some young men and boys, body building can lead to unhealthy behaviors. NPR's Juana Summers speaks with NYU psychologist Andrea Vazzana about compulsive exercise and eating disorders in males.

Infections can present with many different symptoms, and one common symptom is wasting, which involves the loss of fat and in extreme cases lean muscle as well. Researchers in the lab of Salk ...

Belonging to the same group of autoimmune diseases, both dermatomyositis and polymyositis cause muscle inflammation and weakness. But dermatomyositis also affects your skin and is more likely to ...