Understanding Carpal Tunnel Syndrome in Pregnancy
Understanding Carpal Tunnel Syndrome in Pregnancy
What is Carpal Tunnel Syndrome?
Carpal Tunnel Syndrome (CTS) is a common condition that affects the hand and wrist. It occurs when the median nerve – which runs through a narrow passage in the wrist called the carpal tunnel – becomes compressed.
This nerve controls sensation and movement in parts of the hand, and when compressed, can lead to discomfort, numbness, and weakness.
How Common is Carpal Tunnel in Pregnancy?
CTS is relatively common in pregnancy, affecting approximately 2% to 5% of pregnant women. It usually develops in the second or third trimester, but symptoms can occur at any time. In most cases, symptoms resolve after childbirth, typically within a few weeks to months.
What Causes Carpal Tunnel During Pregnancy?
During pregnancy, hormonal changes can cause fluid retention, which may lead to swelling in the tissues. This swelling can increase pressure within the carpal tunnel, compressing the median nerve.
Other risk factors include:
• Repetitive hand or wrist movements
• Obesity
• Multiple pregnancy (e.g. twins)
• Pre-existing diabetes or gestational diabetes
• Family history of Carpal Tunnel Syndrome
What Are the Symptoms of Carpal Tunnel Syndrome
Common symptoms include:
• Tingling, burning or numbness in the fingers (especially the thumb, index, middle, and half of the ring finger)
• Pain in the wrist, hand, or forearm
• Weak grip or clumsiness
• Symptoms that are worse at night or when waking up
Diagnosis of Carpal Tunnel Syndrome
Diagnosis is usually based on your symptoms and a physical examination. In most pregnant women, no further tests (like nerve conduction studies) are needed unless symptoms persist after pregnancy or are severe.
Management and Treatment
1. Non-Medical (Conservative) Management
These measures often help reduce symptoms:
• Wrist splints: Wearing a neutral-position wrist splint, especially at night, can relieve pressure on the median nerve.
• Activity modification: Avoid activities that worsen symptoms, such as repetitive wrist movements or prolonged gripping.
• Elevation: Elevating the hands and avoiding sleeping on them may reduce swelling.
• Hand exercises: Gentle stretching and nerve-gliding exercises may help in some cases.
Hand Exercises
Here are some gentle stretching and nerve gliding exercises that can help relieve symptoms of Carpal Tunnel Syndrome in pregnancy. These are safe, low-impact exercises that aim to reduce pressure on the median nerve and improve mobility and circulation:
1. Wrist Flexor Stretch
Purpose: Stretches the muscles and tendons in the forearm and wrist.
How to do it:
• Extend your arm in front of you with the palm facing up.
• Use your other hand to gently pull your fingers back towards the floor.
• Hold for 15–30 seconds, then relax.
• Repeat 2–3 times on each hand.
2. Wrist Extensor Stretch
Purpose: Stretches the top of the forearm and wrist.
How to do it:
• Extend your arm in front of you with the palm facing down.
• Use your opposite hand to gently pull the back of your hand towards your body.
• Hold for 15–30 seconds.
• Repeat 2–3 times on each hand.
3. Median Nerve Glide (“Nerve Flossing”)
Purpose: Helps the median nerve move more freely through the carpal tunnel.
How to do it:
1. Start with your arm by your side, elbow bent, palm facing your body.
2. Slowly extend your arm outward to the side, at shoulder height, palm still facing forward.
3. Then extend the wrist back slightly and gently tilt your head away from the outstretched arm.
4. Return to the starting position.
• Repeat 5–10 times on each side.
• Go slowly and stop if you feel tingling or increased discomfort.
4. Tendon Gliding Exercise
Purpose: Improves movement of the tendons through the carpal tunnel.
How to do it:
Start with your fingers straight, then move through the following positions:
1. Straight hand (fingers extended)
2. Hook fist (bend only middle and end joints)
3. Full fist (make a gentle fist)
4. Tabletop (bend at knuckles, keeping fingers straight)
5. Straight fist (bend fingers into palm, keeping knuckles straight)
Hold each position for 5 seconds, then return to start.
Repeat the full sequence 5–10 times per hand.
Tips for Doing These Exercises:
• Do them daily, or as advised by your midwife or physiotherapist.
• Stop if symptoms worsen.
• Avoid over-stretching or any painful movements.
2. Medical Treatment
• Pain relief: Paracetamol is generally safe during pregnancy and may help with discomfort.
• Corticosteroid injection: In cases with persistent or more severe symptoms, a local steroid injectioninto the carpal tunnel may be considered. This is usually safe in pregnancy and can provide effective relief.
Discuss with your healthcare provider before taking any medications or having an injection.
3. Surgical Treatment
Surgery (Carpal Tunnel Release) is rarely required during pregnancy. However, it may be considered if:
• Symptoms are severe and disabling
• There is muscle wasting or persistent numbness
• Symptoms do not improve after conservative treatment and continue after childbirth
Surgery involves cutting the ligament over the carpal tunnel to relieve pressure on the median nerve. It is usually a minor, day-case procedure with local anaesthetic.
What Happens After Birth?
In most cases, CTS improves significantly or resolves within a few weeks after delivery as swelling reduces. If symptoms persist beyond 6 to 12 weeks postpartum, further assessment or treatment may be needed.
When to Seek Help
Contact your midwife, GP, or maternity unit if:
• Your symptoms worsen or become constant
• You experience weakness or loss of hand function
• You are concerned about your symptoms affecting your daily life
Summary
• Carpal Tunnel Syndrome is common in pregnancy and usually resolves after birth.
• Conservative measures such as splinting and avoiding aggravating activities are usually effective.
• Steroid injections may be used in moderate to severe cases.
• Surgery is rarely needed during pregnancy.
If you have any concerns, please speak to your midwife or GP for further advice.
Further Information
NHS: https://www.nhs.uk/conditions/carpal-tunnel-syndrome/
Royal College of Obstetricians and Gynaecologists: https://www.rcog.org.uk
