The decremental response follows repetitive nerve stimulation (RNS) completed earlier in proximal muscles compared with distal muscles in a study of patients with myasthenia gravis (MG) and ...

A 30-year-old African-American woman presented to the emergency department for medical assessment after becoming too weak to walk. She reported proximal muscle aches in both arms and legs, a skin rash ...

Background Hamstring muscle injuries are notoriously found among the most common causes of abstinence and delayed return to sport, in a variety of track, field and other high level athletes. In this ...

In this Journal feature, information about a real patient is presented in stages (boldface type) to an expert clinician, who responds to the information by sharing relevant background and reasoning ...

Because myasthenia gravis weakens your muscles so you tire easily, you may wonder if exercise is a smart idea. It’s possible for physical activity to make symptoms worse, but it’s still in your best ...

Background Decreased size and altered function of lumbo-pelvic muscles has been found in elite athletes with low back pain (LBP). Previous research has shown that training trunk neuromotor control in ...

Q: I started to develop weakness that made it hard for me to get out of a chair. My doctor thinks it may be polymyositis and referred me to a specialist. What is this disease? A: Polymyositis (PM) is ...

If you experience persistent muscle weakness, fatigue and skin changes that don't seem to fade, it could be more than just everyday exhaustion. These lingering issues may be symptoms of ...

Spinal muscular atrophy (SMA) is a genetic condition in which the anterior horn motor neurons, as well as other lower motor neurons in the brain stem nuclei, degenerate due to mutations in the ...