Why does it wake me at night?
Because most people sleep with their wrists bent, which narrows the tunnel, and fluid redistributes when you lie flat. That night pattern — waking in the early hours with a numb hand, and shaking it to relieve it — is the most characteristic feature there is, and it is why a night splint is first-line treatment.
My splint isn't helping. Why not?
Check the position. The splint must hold your wrist straight, not bent forward — look at it from the side with your hand relaxed. A great many wrist supports sold in shops hold the wrist in slight flexion, which is exactly the position causing the compression. Also give it four to six weeks, and wear it at night rather than during the day.
Is my little finger meant to be affected?
No — and this is a useful check. The median nerve supplies the thumb, index, middle and half the ring finger, and spares the little finger. Tingling including the little finger points to the ulnar nerve, usually compressed at the elbow, which is a different problem with different treatment.
Is it from typing?
Probably not, despite the reputation. The evidence linking ordinary keyboard and mouse use to carpal tunnel syndrome is weak. The much stronger occupational associations are vibrating tools and forceful repetitive gripping — drills, grinders, chainsaws, assembly and butchery work. If that is your job, it is worth raising formally.
I'm pregnant — will it go away?
Almost certainly, yes. Carpal tunnel in pregnancy usually resolves within weeks to a few months of delivery, because it is driven by fluid retention. Night splints and patience are the right approach, and surgery is very rarely needed. Knowing it is temporary genuinely helps.
Do I need nerve tests before anything can be done?
Not necessarily. A classic history — the right fingers, the night waking, relief on shaking — can be treated on its own. Nerve conduction studies are useful where the picture is unclear, where the neck may be the source, or before surgery, since most surgeons want them.
How long can I leave it before having surgery?
If symptoms are intermittent tingling, there is no urgency — splints and time are reasonable. But persistent numbness, weakness or wasting at the base of the thumb should not be waited out, because nerve recovery becomes less complete the longer the compression continues. Tingling recovers well after surgery; established muscle wasting may not fully.
Is the operation a big deal?
No — it is a short day-case procedure under local anaesthetic, and it is curative for most people. Night symptoms often go immediately. You will need a few weeks before heavy gripping, and it is one of the more reliably satisfying operations in this area.