• Definition
    • A strain is when a muscle is stretched too much and tears. It is also called a pulled muscle. A strain is a painful injury. It can be caused by an accident, overusing a muscle, or using a muscle in the wrong way.

  • Alternative Names
    • Pulled muscle

  • Causes
    • A strain may be caused by:

      • Too much physical activity or effort
      • Improperly warming up before a physical activity
      • Poor flexibility
  • Symptoms
    • Symptoms of a strain can include:

      • Pain and difficulty moving the injured muscle
      • Discolored and bruised skin
      • Swelling
  • First Aid
    • Take the following first aid steps to treat a strain:

      • Apply ice right away to reduce swelling. Wrap the ice in cloth. Do not place ice directly on the skin. Apply ice for 10 to 15 minutes every 1 hour for the first day and every 3 to 4 hours after that.
      • Use ice for the first 3 days. After 3 days, either heat or ice may be helpful if you still have pain.
      • Rest the pulled muscle for at least a day. If possible, keep the pulled muscle raised above your heart.
      • Try not to use a strained muscle while it is still painful. When the pain starts to go away, you can slowly increase activity by gently stretching the injured muscle.
  • When to Contact a Medical Professional
    • Call your local emergency number, such as 911, if:

      • You are unable to move the muscle.
      • The injury is bleeding.

      Call your health care provider if the pain does not go away after several weeks.

  • Prevention
    • The following tips may help you reduce your risk of a strain:

      • Warm-up properly before exercise and sports.
      • Keep your muscles strong and flexible.
  • References
    • Biundo JJ. Bursitis, tendinitis, and other periarticular disorders and sports medicine. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 271.

      Nakamura N, Rodeo SA, Alini M, Maher S, et al. Physiology and pathophysiology of musculoskeletal tissues. In: Miller MD, Thompson SR, eds. DeLee and Drez's Orthopaedic Sports Medicine. 4th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 1.