Trigger Finger (Stenosing Tenosynovitis): Symptoms, Treatment & UK Online Doctor Support

Trigger finger, medically known as stenosing tenosynovitis, is a condition that affects the tendons in the hand. It commonly results in a finger or thumb getting stuck in a bent position, or 'snapping' and 'clicking' when you try to straighten it. This occurs when the tunnel (the sheath) that the tendon slides through becomes too narrow or the tendon itself develops a small nodule.

While the condition can be painful, it is usually not a sign of a serious underlying disease. In the UK, it is most common in people over the age of 40 and is frequently seen in patients with pre-existing conditions like diabetes or rheumatoid arthritis. It can affect one or several fingers at once, and is often most noticeable first thing in the morning.

Recognising the signs

According to NHS guidance, the symptoms of trigger finger range from mild to severe. Common experiences include:

• A painful clicking or snapping sensation when moving the finger.
• Tenderness or a small bump (nodule) at the base of the finger on the palm side.
• Stiffness, especially in the morning.
• The finger locking in a bent position, which may suddenly pop straight.
• In severe cases, the finger cannot be straightened even with help.

Why does it happen?

The exact cause is not always clear, but it is often linked to repetitive hand movements or prolonged gripping. This causes inflammation of the protective sheath surrounding the tendon. Risk factors include certain professions (such as manual labourers or musicians), gender (it is more common in women), and health conditions such as gout or carpal tunnel syndrome.

Treatment for trigger finger in the UK typically follows a stepped approach as recommended by NICE (National Institute for Health and Care Excellence). In many cases, the condition may resolve with conservative management.

Self-Care and Home Relief

• Rest: Avoiding activities that involve repetitive gripping for at least 3 to 4 weeks.
• Splinting: Wearing a splint at night to keep the affected finger in an extended position, which reduces morning stiffness.
• Pain Relief: Over-the-counter paracetamol or non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen can help manage pain and swelling. Always consult a pharmacist before starting new medications.

Medical Interventions

If home treatments fail, a GP may suggest more intensive options. Corticosteroid injections are a secondary treatment where a steroid is injected into the tendon sheath to reduce inflammation. This is effective for a significant number of patients, though diabetics may find it less successful. If the finger remains locked, a minor surgical procedure called 'trigger finger release' might be necessary to widen the sheath and allow the tendon to move freely again.

If you are experiencing persistent finger pain or clicking, you can speak to a GP online to assess your symptoms from the comfort of your home. An online GP consultation is a convenient first step for British patients to discuss the severity of their condition and receive professional advice on the best course of action.

During a video consultation, the doctor can observe your hand movements, discuss your medical history, and advise if you need a physical examination or a referral to a hand specialist. They can also provide a private prescription for stronger anti-inflammatories or issue a sick note if your condition prevents you from performing your duties at work, particularly if your job involves manual labour or heavy computer use.

Maintaining hand flexibility is key to preventing a recurrence of trigger finger. Gentle stretching exercises can help keep the tendons sliding smoothly. The NHS often recommends the following:

• Finger extensions: Gently pulling each finger back toward the wrist until a stretch is felt.
• Tendon glides: Making a fist and then slowly straightening the fingers one at a time.
• Massage: Rubbing the palm of the hand at the base of the affected finger to help reduce tension.

If you use tools or a keyboard for long periods, ensure you take frequent breaks and use ergonomic supports to reduce the strain on your tendons.