You wake up at 2am with your hand feeling like it’s asleep. You shake it out, the tingling settles, you go back to sleep. A few hours later, same thing. By morning it’s mostly fine — until you’ve been on the tools for an hour and the numbness starts creeping back.
That pattern — worse at night, worse with sustained grip, affecting the thumb and first two or three fingers — is carpal tunnel syndrome until proven otherwise. It’s the most common nerve entrapment in the body, and it’s significantly more common in trade work than in the general population.
What’s actually happening
The carpal tunnel is a narrow passage at the base of the wrist, formed by the wrist bones on three sides and the transverse carpal ligament across the top. The median nerve runs through it, along with nine flexor tendons. The tunnel has very little slack — pressure inside it rises quickly with wrist position changes and with swelling.
When the median nerve is compressed in the tunnel, it starts misfiring. The nerve supplies the thumb, index finger, middle finger, and half of the ring finger — which is exactly where the tingling and numbness appear. The little finger is not affected by CTS; if your symptoms are predominantly there, that’s a different nerve (ulnar) and a different problem.
In early CTS the compression is intermittent — pressure builds at night when the wrist sits in a flexed position, or during sustained grip, and settles when the wrist is neutral and the hand is relaxed. In later-stage CTS the numbness becomes more constant, and there can be weakness and visible wasting in the muscle at the base of the thumb (thenar eminence). That stage needs faster intervention.
Why trades work loads the tunnel
Several occupational exposures common in trade work increase the pressure inside the carpal tunnel:
- Sustained gripping — the flexor tendons are under constant load with the hand gripping a tool. Those tendons run through the carpal tunnel alongside the nerve. Sustained activation compresses the tunnel contents from the inside.
- Vibrating tools— power tools, grinders, jackhammers, and impact drivers transmit vibration directly through the hand. Vibration causes localised inflammation and swelling within the tunnel over time, and there’s evidence it accelerates nerve conduction changes.
- Sustained wrist flexion — working in tight spaces (under sinks, in roof cavities, behind panels) often means holding tools with the wrist bent rather than neutral. Wrist flexion significantly increases carpal tunnel pressure. The difference between a neutral wrist and a flexed one is clinically significant.
- Repetitive hand and wrist movements — repetitive assembly, tightening, cutting, or drilling accumulates mechanical load on the tunnel over a full working day.
What conservative treatment involves
CTS that’s caught in the mild-to-moderate stage — symptoms present, but no constant numbness and no thenar wasting — is best managed conservatively first. For most people this means a combination of three things, run simultaneously.
Night splinting
The single strongest evidence-based intervention for CTS is a wrist splint worn at night, holding the wrist in a neutral position. The reason it’s effective is simple: most people sleep with their wrists curled in, which keeps the carpal tunnel compressed for hours. A neutral-position splint takes that sustained compression away during the period when it would otherwise be worst.
Most people notice improvement in the night symptoms within one to two weeks of consistent splint use. It doesn’t fix the underlying problem, but it significantly reduces nerve irritation — which makes everything else easier to treat.
Nerve and tendon gliding exercises
The median nerve, like all nerves, needs to slide freely through the surrounding tissue. In CTS it can become restricted or sensitised — leading to increased mechanosensitivity throughout the arm. Specific nerve mobilisation exercises (often called nerve flossing or nerve gliding) move the median nerve through its pathway, reduce intraneural oedema, and improve the nerve’s own circulation.
Tendon gliding exercises — moving the fingers through specific positions that maximise the differential movement of the flexor tendons through the tunnel — help prevent adhesion and reduce the mechanical load the tendons place on the nerve. Done gently and consistently (a few minutes, several times a day), they make a meaningful difference to symptoms within two to four weeks.
Manual therapy
Hands-on treatment for CTS is more effective than most people expect. A 2025 network meta-analysis of 49 trials found manual therapy ranked highest for short and medium-term pain relief. This includes mobilisation of the carpal bones, soft tissue work through the forearm flexors and pronator teres (which contributes to median nerve mechanosensitivity), and work further up the chain — cervical and thoracic spine — where the nerve root originates.
An RCT comparing manual therapy to surgery for mild-to-moderate CTS found equivalent self-reported function at six and twelve months. Manual therapy is not a permanent fix for structural entrapment, but for presentations that haven’t yet reached that point, it’s a genuine alternative to jumping straight to the surgical pathway. More on what manual therapy involves →
On-the-job changes that reduce load
Treatment works better when the occupational exposure is also reduced. These aren’t always possible on site, but where they are:
- Tool padding and ergonomic handles— padded grips distribute the contact force across the palm rather than concentrating it at the tunnel. Anti-vibration gloves reduce the vibration transmission from power tools, though they don’t eliminate it.
- Wrist position awareness— when you have the option of how to hold a tool or position yourself, neutral wrist is always better than flexed. Worth thinking about before you’re committed to an awkward position.
- Micro-breaks during sustained grip — putting the tool down for 30 seconds every 20–30 minutes reduces the cumulative load. On a busy day this sounds impossible; in practice a brief conscious break is usually achievable between tasks.
- Sleep posture — some people curl up with their wrists flexed under their pillow or chest. A loose awareness of not doing that — alongside the splint — reduces night symptoms faster.
When surgery is the right call
Being honest: more than half of people with CTS will eventually need surgery within a year, even with good conservative management. That’s not a failure of treatment — it’s the nature of structural nerve entrapment in a working hand that keeps loading the same tunnel.
The indications for moving to a surgical referral:
- Less than 30% improvement in symptoms after six to eight weeks of proper conservative management
- Symptoms worsening despite treatment
- Constant numbness rather than intermittent
- Visible muscle wasting at the base of the thumb
- Nerve conduction studies showing significant axonal loss
Surgical release (carpal tunnel decompression) is one of the most consistently successful elective procedures in musculoskeletal surgery. Recovery for a tradie typically means four to six weeks off heavy hand use — which is the main reason people put it off. But waiting until the nerve is severely damaged makes surgical outcomes worse and recovery longer. If conservative management isn’t working, earlier surgical referral is better than continued waiting. Hand therapy and post-surgical rehabilitation →
A note on the other hand conditions that get confused with CTS
Not all hand tingling is carpal tunnel. Common alternatives worth ruling out:
- Cubital tunnel syndrome — ulnar nerve compression at the elbow, causing tingling in the ring and little finger. Common in tradies who lean on their elbows or work with the elbow flexed for long periods.
- Cervical radiculopathy — nerve root compression in the neck referring symptoms into the arm and hand. The pattern is different from CTS but overlaps enough to cause confusion. Both can be present simultaneously.
- Pronator teres syndrome — median nerve compression higher up the forearm, not at the wrist. Rare, but produces a similar symptom distribution to CTS without responding to wrist splinting.
A proper assessment — taking the symptom pattern, testing sensation, checking reflexes, and doing nerve tension tests — should distinguish between these before committing to a treatment direction.