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.
A strain may be caused by:
Symptoms of a strain can include:
Take the following first aid steps to treat a strain:
Call your local emergency number, such as 911, if:
Call your health care provider if the pain does not go away after several weeks.
The following tips may help you reduce your risk of a strain:
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.
Last reviewed on: 5/9/2015
Reviewed by: C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.