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  1. Muscle cramp - Symptoms and causes - Mayo Clinic

    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 …

  2. Tendinopathy - Symptoms and causes - Mayo Clinic

    Mar 22, 2025 · Tendinopathy is a term for any condition that affects a tendon. Tendons are cords that attach muscle to bone. Tendinopathy, which can cause pain and tenderness, is common. …

  3. Dystonia - Symptoms and causes - Mayo Clinic

    Jan 25, 2025 · The muscle spasms can range from mild to more serious. They may be painful, and they can affect the person's ability to complete daily tasks. There's no cure for dystonia, …

  4. Isometric exercises: Good for strength training? - Mayo Clinic

    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 …

  5. Myofascial pain syndrome - Symptoms and causes - Mayo Clinic

    Jan 5, 2024 · Overview Myofascial pain syndrome is a long-term pain condition. It involves some muscles and the thin cover of tissue that holds muscles in place, called fascia. Pressure on …

  6. Myasthenia gravis - Symptoms and causes - Mayo Clinic

    Aug 22, 2025 · This causes muscle weakness. Myasthenia gravis also may happen if antibodies block proteins such as muscle-specific receptor tyrosine kinase, also called MuSK, or …

  7. Statin side effects: Weigh the benefits and risks - Mayo Clinic

    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, …

  8. Polymyalgia rheumatica - Symptoms & causes - Mayo Clinic

    Mar 1, 2025 · Overview Polymyalgia rheumatica is an inflammatory condition. It causes joint and muscle pain and stiffness, mainly in the shoulders and hips. Symptoms of polymyalgia …

  9. Hemifacial spasm - Symptoms and causes - Mayo Clinic

    Jun 28, 2023 · These muscle movements, also called contractions, often start in the eyelid. Then they might move on to the cheek and mouth on the same side of the face. At first, hemifacial …

  10. Strength training: Get stronger, leaner, healthier - Mayo Clinic

    Apr 29, 2023 · Want to reduce body fat, increase lean muscle mass and burn calories more efficiently? Strength training to the rescue! Strength training is a key component of overall …