Toxic (Transient) Synovitis in Children

Benign cause of transient hip pain and limp in childhood.

Written by: Saygı Hospital Health Guide Editorial Board

Last updated: June 10, 2026

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Çocuk Sağlığı ve Hastalıkları department. Book Appointment →

What is Toxic (Transient) Synovitis in Children?

Toxic (transient) synovitis is the most common cause of acute hip pain and limp in children, especially between ages 3 and 8. It typically follows an upper respiratory tract infection by 1 to 2 weeks.

It is a self-limited condition that usually resolves within 1 to 2 weeks. The critical task is to distinguish it from septic arthritis. Kocher criteria — fever, ESR > 40, WBC > 12,000, and inability to bear weight — guide this differentiation.

Symptoms

Unilateral hip pain

Limp or refusal to bear weight

Restricted hip motion, especially internal rotation

Mild fever (high fever favors septic arthritis)

Referred knee or thigh pain

Risk Factors

Boys aged 3 to 8 years

Recent viral infection

Seasonal predominance in autumn and winter

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

Onset of limp or inability to walk
Fever with hip pain — concern for septic arthritis (urgent)
Symptoms not improving within 10 days
Marked restriction of hip movement

Treatment Methods

NSAIDs such as ibuprofen for symptom control

Rest and avoidance of weight bearing

Exclusion of septic arthritis using Kocher criteria, CRP, and ESR

Ultrasound to evaluate joint effusion

Joint aspiration if septic arthritis is suspected

Gradual return to activity once symptoms resolve

Which Department to Visit?

You can visit our Çocuk Sağlığı ve Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Çocuk Sağlığı ve Hastalıkları Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.