What is myositis and what are typical symptoms?

Proximal Weakness. Myositis means, literally, inflammation of muscles. The primary symptom is insidious (slow/progressive) weakness of muscles closest to the body, such as shoulders and thighs. If left untreated, weakness can progress to point where one is unable to stand without assistance, finds it very difficult to climb stairs, and unable to raise arms. Pain can be present but weakness is primary symptom.
Muscle inflamatiin. Myositis means muscle inflamation. It can occur where a muscle has been injured.

Related Questions

What is myositis and what are typical symptoms of it?

Muscle inflammation. An inflammatory disease of muscle which produces muscle weakness more prominently than pain.
Weakness. Myositis is an inflammation of muscles leading to weakness, pain or muscle tenderness. It can be the result of several causes including autoimmune disease. A low thyroid and certain medications, particularly cholesterol-lowering drugs.
Weakness>Pain. Myositis is inflammation of muscles caused by autoimmune attack of the muscle tissue. It can sometimes be painful but the primary symptom is progressive weakness (over weeks and months). Affected muscles are usually proximal (closer to the body) such as shoulders and hips while wrists/hands and feet are usually spared. Sometimes accompanied by Raynaud's and purple/red rash around eyes and on chest.