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Strains

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

  • 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. Either heat or ice may be helpful after that if you still have pain.
  • Rest the pulled muscle for at least a day. If possible, keep the pulled muscle raised about 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.

When to get medical assistance

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. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 271.

Brinker MR, O’Connor DP, Almekinders LC, et al. Physiology of Injury to Musculoskeletal Structures: 1. Muscle and Tendon Injury. In: DeLee JC, Drez D Jr, Miller MD, eds. 3rd ed. Philadelphia, Pa: Saunders Elsevier; 2009:chap 1, section A.

Encyclopedia content is provided as information only and not intended to replace the advice and instruction from your personal physician.