Toxic synovitis is a condition affecting children that causes hip pain and limping.
Synovitis - toxic; Transient synovitis
Toxic synovitis occurs in children before puberty. It usually affects children from 3 to 10 years old. It is a type of inflammation of the hip. Its cause is not known. Boys are affected more often than girls.
Symptoms may include:
Aside from the hip discomfort, the child does not usually appear ill.
Treatment often includes limiting activity to make the child more comfortable. But, there is no danger with normal activities. The health care provider may prescribe nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain.
The hip pain goes away within 7 to 10 days.
Toxic synovitis goes away on its own. There are no expected long-term complications.
Call for an appointment with your child's provider if:
Sankar WN, Winell JJ, Horn BD, Wells L. The hip. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 698.
Singer NG. Evaluation of children with rheumatologic complaints. In: Hochberg MC, Gravallese EM, Silman AJ, Smolen JS, Weinblatt ME, Weisman MH, eds. Rheumatology. 7th ed. Philadelphia, PA: Elsevier; 2019:chap 105.
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