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. It can also occur after a common cold or viral infection.
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.
Contact your child's provider for an appointment if:
Published Date: July 28, 2021
Published 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, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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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.