What does carpal tunnel syndrome feel like?

The hallmark is tingling, numbness, or burning in the thumb, index finger, middle finger, and the thumb-side half of the ring finger. Symptoms typically wake you at night, and many people instinctively shake the hand to get relief — the so-called flick sign. During the day, symptoms commonly come on while driving, holding a phone, or gripping things. Some people notice clumsiness, weakened grip, or dropping objects. Pain can radiate up the forearm, occasionally as far as the shoulder. Numbness in the little finger is not typical of carpal tunnel and points to a different nerve problem.

What causes carpal tunnel syndrome?

The median nerve is squeezed as it passes through a tight tunnel at the wrist, formed by the wrist bones on one side and a stiff ligament on the other. Anything that increases pressure in that tunnel can trigger symptoms. Common contributors include female sex, age 45 to 60, pregnancy (especially the third trimester), obesity, diabetes, an underactive thyroid, rheumatoid arthritis, and occupations involving repetitive wrist movements or vibrating tools. Bilateral carpal tunnel in an older person without an obvious cause is occasionally a sign of a rarer condition called amyloidosis, which deserves further investigation.

How is carpal tunnel syndrome diagnosed?

Diagnosis is mainly clinical — your GP listens to your symptoms and examines your hand. Bedside tests include the Phalen test (holding the wrists bent for 60 seconds), the Tinel sign (tapping over the nerve at the wrist), and the carpal compression test, which is the most accurate of the three. Blood tests may be ordered to check thyroid function, blood sugar, and other reversible contributors. Nerve conduction studies, performed by a neurologist or rehabilitation physician, confirm the diagnosis and grade severity — especially before surgery. Ultrasound of the wrist is increasingly used as a quick bedside confirmation.

Will carpal tunnel from pregnancy go away?

Pregnancy-related carpal tunnel syndrome typically appears in the third trimester due to fluid retention and hormonal changes. In most cases, symptoms resolve on their own within a few months of birth. Management during pregnancy is conservative — a wrist splint worn overnight, attention to sleep position, and reassurance. Surgery is generally avoided during pregnancy unless symptoms are severe or there is muscle wasting at the base of the thumb. A corticosteroid injection can be considered when symptoms are intolerable and conservative measures are not enough. If symptoms persist beyond six months postpartum, further assessment is warranted.

When should I see a doctor urgently about hand numbness?

Most carpal tunnel is not an emergency, but some features warrant prompt attention. See your GP without delay if you notice weakening grip, dropping objects, or visible wasting of the muscle at the base of the thumb — these suggest motor nerve damage that may not fully reverse if left untreated. Constant numbness that does not come and go, pain out of proportion to the symptoms, numbness spreading above the wrist, or numbness involving the little finger all point away from straightforward carpal tunnel and need a different work-up. Sudden weakness, a new wrist drop, or rapidly progressive symptoms warrant same-day assessment.

Carpal tunnel syndrome

Carpal tunnel syndrome: symptoms, diagnosis, and treatment in Australia

By Dr HB Lo, FACRRM Reviewed 31 May 2026 8 min read

Carpal tunnel syndrome is the most common pinched-nerve condition. The median nerve is squeezed at the wrist, causing tingling and numbness in the thumb, index, middle, and half the ring finger — classically waking you at night.

First-line treatment is a wrist splint worn overnight for at least six weeks, plus treating reversible contributors. A corticosteroid injection helps when splinting is not enough, and surgery is highly effective for severe cases.

What carpal tunnel syndrome is

Carpal tunnel syndrome is the most common nerve-entrapment condition in adults. The median nerve runs from the forearm into the hand through a narrow passage at the wrist — the carpal tunnel — formed by the wrist bones on the floor and a stiff band of ligament across the top. When pressure in that tunnel rises, the nerve is squeezed, which interferes with its ability to send signals. The result is tingling, numbness, pain, and — in more advanced cases — weakness in the part of the hand the median nerve supplies: the thumb, index finger, middle finger, and the thumb-side half of the ring finger.

Around one in ten adults develops carpal tunnel syndrome at some point in life. It is roughly three times more common in women than men, with the peak between ages 45 and 60. Both hands are affected in about half of cases, though one side is usually worse — typically the dominant hand. Most people recognise the pattern: hands tingling at night, waking with numb fingers, shaking the hand to get the feeling back.

This article explains what causes it, how it is diagnosed in Australian general practice, and what the treatment options look like — from wrist splints through to surgery — drawing on Australian and international clinical guidelines including NICE NG213, Therapeutic Guidelines, RACGP resources, and the AAOS 2024 guideline-supported recommendations.

What causes it

Anything that raises pressure inside the carpal tunnel can squeeze the median nerve. In most people the underlying reason is a combination of factors rather than a single cause.

Sex, age, and genetics. Women are about three times more likely than men to develop carpal tunnel syndrome, particularly between the ages of 45 and 60. Some people are born with a naturally smaller tunnel, which can predispose them.

Pregnancy. Carpal tunnel symptoms in pregnancy are common, typically appearing in the third trimester. Fluid retention and hormonal changes raise pressure in the tunnel. The good news is that symptoms usually resolve on their own within a few months of birth.

Medical conditions. An underactive thyroid (hypothyroidism), diabetes, rheumatoid arthritis, and gout are all linked with carpal tunnel syndrome. Excess body weight is the strongest modifiable risk factor — being above a BMI of 30 substantially increases the risk. Treating the underlying condition often improves symptoms.

Work and hand use. Jobs involving repetitive forceful wrist movements, sustained awkward wrist positions, or vibrating tools — assembly-line work, certain trades, some musicians — are associated with carpal tunnel. The link to keyboard and mouse use specifically is more debated, though sustained awkward wrist posture certainly does not help. In Australia, occupational carpal tunnel is recognised as compensable by Comcare and the state workers’ compensation schemes when the work history fits.

Rarer causes. In an older person who develops carpal tunnel on both sides without any of the usual contributors, doctors sometimes consider amyloidosis — a condition where abnormal protein deposits build up in tissues, including around the median nerve. This is rare but worth identifying, because newer treatments are available.

How it is diagnosed

In most cases, diagnosing carpal tunnel syndrome is straightforward — a careful history and hand examination by your GP picks it up. The typical story is night-time tingling in the thumb, index, and middle fingers; relief by shaking the hand; and symptoms during specific daytime activities such as driving or holding a phone.

Bedside tests your GP may use:

Phalen test — holding the wrists bent down for about 60 seconds; bringing on tingling supports the diagnosis.
Tinel sign — tapping over the median nerve at the wrist crease; producing tingling into the fingers is suggestive.
Carpal compression test — pressing directly over the carpal tunnel for 30 seconds; this is the single most accurate of the three bedside tests.

Your GP will also check for weakness or muscle wasting at the base of the thumb, which would suggest more advanced nerve compression.

Blood tests are commonly arranged to check for reversible contributors — thyroid function, blood sugar or HbA1c, and an iron and B12 screen. If inflammatory arthritis is suspected, additional blood tests follow.

Nerve conduction studies are the gold-standard confirmation. They involve a small specialist procedure, usually performed by a neurologist or rehabilitation physician, that measures how well electrical signals travel along the median nerve. They confirm the diagnosis, rule out other nerve problems, and grade the severity as mild, moderate, or severe — important information when surgery is being considered.

Ultrasound of the wrist is increasingly used in Australia as a fast, non-invasive bedside test. Measuring the cross-sectional area of the median nerve at the wrist can help confirm the diagnosis when nerve conduction studies are not immediately available.

MRI is generally reserved for atypical cases — for example, when a mass or unusual swelling in the wrist is suspected.

What the treatment options are

Treatment is stepped. The right step for you depends on how severe your symptoms are, how long you’ve had them, whether nerve testing shows mild or severe changes, and whether you have visible weakness or muscle wasting.

Step 1 — wrist splints and treating contributing factors

For mild to moderate carpal tunnel, a wrist splint that holds the wrist in a neutral straight position is first-line. It is worn overnight — because most symptoms occur at night — for at least six weeks. Daytime splinting can be added for symptomatic specific activities. Randomised trials and Cochrane reviews support nocturnal splinting as effective, particularly for symptoms of less than six months duration (AAOS 2024; NICE NG213).

Splints can be supplied off-the-shelf from pharmacies or fitted by an accredited hand therapist via the Australian Hand Therapy Association. A hand therapist can also teach nerve and tendon gliding exercises, and review ergonomics for work-related cases.

Reversible contributors are addressed in parallel: optimising thyroid replacement if an underactive thyroid is found, improving diabetes control, and weight loss where relevant. For pregnancy-related carpal tunnel, reassurance plus splinting is usually all that’s needed — most cases resolve within months of birth.

Step 2 — corticosteroid injection

When splinting is not enough, an injection of corticosteroid into the carpal tunnel — typically performed under ultrasound guidance by a hand surgeon, rheumatologist, or interventional radiologist — provides strong short-term relief. Cochrane reviews show clear benefit at three months, with roughly half of people still better at one year (Cochrane). Injections also serve a diagnostic purpose: if symptoms do not improve at all, the diagnosis is reconsidered. The number of injections is typically limited (usually no more than two or three at the same site) because of small risks to the surrounding tissue.

Step 3 — carpal tunnel release surgery

Surgery is the definitive treatment for severe or persistent carpal tunnel that has not responded to conservative measures, and for anyone showing motor nerve damage — weakness or visible wasting at the base of the thumb. The operation, called carpal tunnel release, divides the ligament that forms the roof of the tunnel, relieving pressure on the nerve.

It can be performed as open surgery through a small palm incision (the long-established standard) or as endoscopic (keyhole) surgery through one or two tiny incisions. Recovery from keyhole surgery is slightly faster — about a week earlier return to light activity — and 12-month outcomes are equivalent for both approaches. Most people get durable symptom resolution, with around 85% remaining better long-term (AAOS 2024).

Light hand use typically resumes within a week or two, with full activity by four to six weeks. Hand therapy supports scar healing, nerve gliding, and strength recovery.

What does not help

Several widely promoted options have evidence against routine use. Oral anti-inflammatories provide symptom relief but do not change the underlying nerve compression. Diuretics are no longer recommended. High-dose vitamin B6 (pyridoxine) is not effective and can paradoxically cause nerve damage of its own at sustained high doses, so it is not recommended as a treatment for carpal tunnel syndrome.

When to see your GP

Book a routine appointment with your GP if you have:

Night-time tingling, numbness, or pain in the thumb, index, middle, or ring fingers — particularly if you find yourself shaking the hand for relief
Daytime symptoms during activities such as driving, holding a phone, or gripping
Symptoms that have lasted more than a few weeks despite trying a basic wrist splint
Carpal tunnel symptoms in pregnancy — for confirmation and a fitted splint

Red flags — see a doctor sooner

Some features point to more advanced nerve damage or to a different problem altogether, and warrant prompt review:

Weakening grip or dropping objects — suggests motor nerve involvement
Visible muscle wasting at the base of the thumb — a sign of advanced damage that may not fully reverse without surgery
Constant numbness that does not come and go — also suggests more advanced compression
Numbness involving the little finger — this points away from carpal tunnel toward a different nerve (the ulnar nerve)
Pain or numbness above the wrist or up the arm — suggests the problem is higher up than the carpal tunnel
Sudden weakness or wrist drop — needs same-day assessment

If you notice any of these, contact your GP promptly. After hours, HealthDirect (1800 022 222) provides telephone triage advice.

What this article is and is not

This is general health information for Australian patients, drawn from current clinical guidelines including NICE NG213, Therapeutic Guidelines (eTG), the AAOS 2024 guideline-supported recommendations, and RACGP resources. It is not personal medical advice and does not create a doctor–patient relationship. Decisions about investigation, splinting, injection, or surgery are made with your own GP and treating clinicians, taking your full medical context into account.

For consumer-friendly Australian information: HealthDirect — Carpal tunnel syndrome and Better Health Channel — Carpal tunnel syndrome.

Sources cited

Frequently asked questions

What does carpal tunnel syndrome feel like?

The hallmark is tingling, numbness, or burning in the thumb, index finger, middle finger, and the thumb-side half of the ring finger. Symptoms typically wake you at night, and many people instinctively shake the hand to get relief — the so-called flick sign. During the day, symptoms commonly come on while driving, holding a phone, or gripping things. Some people notice clumsiness, weakened grip, or dropping objects. Pain can radiate up the forearm, occasionally as far as the shoulder. Numbness in the little finger is not typical of carpal tunnel and points to a different nerve problem.
What causes carpal tunnel syndrome?

The median nerve is squeezed as it passes through a tight tunnel at the wrist, formed by the wrist bones on one side and a stiff ligament on the other. Anything that increases pressure in that tunnel can trigger symptoms. Common contributors include female sex, age 45 to 60, pregnancy (especially the third trimester), obesity, diabetes, an underactive thyroid, rheumatoid arthritis, and occupations involving repetitive wrist movements or vibrating tools. Bilateral carpal tunnel in an older person without an obvious cause is occasionally a sign of a rarer condition called amyloidosis, which deserves further investigation.
How is carpal tunnel syndrome diagnosed?

Diagnosis is mainly clinical — your GP listens to your symptoms and examines your hand. Bedside tests include the Phalen test (holding the wrists bent for 60 seconds), the Tinel sign (tapping over the nerve at the wrist), and the carpal compression test, which is the most accurate of the three. Blood tests may be ordered to check thyroid function, blood sugar, and other reversible contributors. Nerve conduction studies, performed by a neurologist or rehabilitation physician, confirm the diagnosis and grade severity — especially before surgery. Ultrasound of the wrist is increasingly used as a quick bedside confirmation.
How is carpal tunnel syndrome treated?

Treatment is stepped. First-line is a wrist splint worn overnight in a neutral position for at least six weeks, plus addressing any contributing factors such as thyroid function, diabetes control, weight, and workplace ergonomics. If splinting is not enough, a corticosteroid injection into the carpal tunnel — typically performed under ultrasound guidance — gives strong short-term relief in most people, with roughly half remaining better at one year. Carpal tunnel release surgery, either open or keyhole, is highly effective for severe, persistent, or recurrent cases, with most people getting durable symptom resolution.
Will carpal tunnel from pregnancy go away?

Pregnancy-related carpal tunnel syndrome typically appears in the third trimester due to fluid retention and hormonal changes. In most cases, symptoms resolve on their own within a few months of birth. Management during pregnancy is conservative — a wrist splint worn overnight, attention to sleep position, and reassurance. Surgery is generally avoided during pregnancy unless symptoms are severe or there is muscle wasting at the base of the thumb. A corticosteroid injection can be considered when symptoms are intolerable and conservative measures are not enough. If symptoms persist beyond six months postpartum, further assessment is warranted.
When should I see a doctor urgently about hand numbness?

Most carpal tunnel is not an emergency, but some features warrant prompt attention. See your GP without delay if you notice weakening grip, dropping objects, or visible wasting of the muscle at the base of the thumb — these suggest motor nerve damage that may not fully reverse if left untreated. Constant numbness that does not come and go, pain out of proportion to the symptoms, numbness spreading above the wrist, or numbness involving the little finger all point away from straightforward carpal tunnel and need a different work-up. Sudden weakness, a new wrist drop, or rapidly progressive symptoms warrant same-day assessment.

Source quality

Sources grouped by evidence tier. AU primary tier first; international where AU is silent or lagging; named-author reconstruction where guidelines have not yet caught up. How tiers work.