What Causes Trigger Finger in Children?

One of my friends recently discovered that her child has a deformity in one finger, and the hospital diagnosed it as tenosynovitis. So, what causes tenosynovitis in children?
What Causes Tenosynovitis in Children?
Tenosynovitis in children may result from congenital factors and is also known as stenosing tenosynovitis—a common congenital musculoskeletal disorder in children. It most frequently affects the thumb but can also occur in the ring or middle finger. Symptoms are typically detected within weeks or months after birth. Many parents fail to recognize the condition early, often delaying medical consultation until the child is around two years old—or even older—before seeking treatment. For congenital tenosynovitis in children, conservative management is generally preferred, including local corticosteroid injections, acupuncture, and splinting or immobilization. If conservative treatment proves ineffective, surgical intervention may be considered. In most cases, pediatric tenosynovitis is fully curable.

Prevention of infantile tenosynovitis primarily involves the following measures:
1. Ensure the baby’s diet is healthy and balanced—preferably light and low in grease—and avoid overeating.
2. Maintain adequate warmth, especially for the baby’s fingers, bones, and joints, to prevent chilling or exposure to cold drafts.
3. Appropriately schedule the baby’s daily physical activities to avoid excessive fatigue.
4. Actively encourage finger and joint mobility exercises to promote peripheral blood circulation and reduce pressure on tendons and surrounding tissues.
5. Seek prompt diagnosis and treatment if any signs or symptoms of tenosynovitis appear.

In daily life, special attention should be paid to the baby’s overall health, particularly nutrition, to enhance physical fitness and resilience. We hope this information is helpful to you.