Mar 7, 2023 · Overview A muscle cramp is a sudden, unexpected tightening of one or more muscles. Sometimes called a charley horse, a muscle cramp can be very painful. Exercising or working hard, …

Nov 18, 2023 · Isometric exercises are tightening (contractions) of a specific muscle or group of muscles. During isometric exercises, the muscle doesn't noticeably change length. The affected joint …

Jul 12, 2024 · Overview Dysarthria happens when the muscles used for speech are weak or are hard to control. Dysarthria often causes slurred or slow speech that can be difficult to understand. Common …

Dec 13, 2023 · Strength, muscle size and performance. Oral creatine use might allow an athlete to do more work during reps or sprints, leading to greater gains in strength, muscle mass and …

Aug 22, 2025 · Overview Myasthenia gravis is a condition that happens when communication between nerves and muscles breaks down. This causes muscles to feel weak and get tired quickly. This …

Jul 21, 2025 · What are statin side effects? Muscle pain and damage One of the most common complaints of people taking statins is muscle pain. You may feel this pain as a soreness, tiredness, …

Feb 21, 2024 · Overview Cardiomyopathy (kahr-dee-o-my-OP-uh-thee) is a disease of the heart muscle. It causes the heart to have a harder time pumping blood to the rest of the body, which can lead to …

Aug 1, 2025 · Check with your doctor right away if you have dark urine, fever, muscle cramps or spasms, muscular pain, stiffness, tenderness, wasting or weakness, or unusual tiredness or weakness.

Mar 1, 2025 · Polymyalgia rheumatica is an inflammatory condition. It causes joint and muscle pain and stiffness, mainly in the shoulders and hips. Symptoms of polymyalgia rheumatica (pol-e-my-AL-juh …

Dec 9, 2022 · Imaging tests In severe hamstring injuries, the muscle can tear or even separate from the pelvis or shinbone. When this happens, a small piece of bone can be pulled away from the main …