Numbness in the thumb and first two fingers. Tingling that wakes you at 3 a.m. and makes you shake your hand out. A grip that's getting unreliable. If you've searched these symptoms, you've already diagnosed yourself with carpal tunnel syndrome — and you might be right. But here's what most people don't know: the median nerve doesn't start at your wrist. It starts at your neck, and it can be compressed at several points along the way.
Why wrist-only treatment often fails
Classic carpal tunnel syndrome is compression of the median nerve inside the narrow tunnel at the wrist, usually from repetitive strain and inflamed tendons. Splints, activity changes, and — in real cases — surgery address exactly that spot.
But the same nerve passes through the neck (where its root fibers exit the cervical spine), under tight chest and shoulder muscles, and past the elbow. Compression or irritation at any of those points produces hand numbness and tingling that looks nearly identical to carpal tunnel. Clinicians call it "double crush" when the nerve is irritated at two points at once — and it's one of the main reasons wrist splints and even wrist surgery sometimes fail to resolve symptoms.
Clues the problem isn't only in your wrist
Neck pain or stiffness alongside the hand symptoms. Tingling that involves the whole hand or reaches above the wrist. Symptoms that flare with certain neck or shoulder positions, long drives, or hours at a desk. Numbness in both hands. Any of these suggests the nerve pathway needs to be examined from the spine down, not just at the wrist.
How we evaluate it
At our Woodlands office, a hand-numbness exam traces the entire pathway: cervical spine motion and nerve root testing, thoracic outlet screening at the shoulder, forearm muscle tension, and the wrist itself, including the classic provocative tests. The goal is to map every point where the nerve is being irritated — because treating one compression point while ignoring another is how people end up in splints for years.
What treatment looks like
Depending on what the exam shows: adjustments to restore motion in restricted cervical segments, soft-tissue work on the scalenes, pecs, and forearm flexors, nerve gliding exercises that restore the median nerve's ability to slide through its tunnel, and honest ergonomic changes — keyboard height, mouse grip, wrist position during sleep. Conservative care like this resolves a large share of mild-to-moderate cases and is worth exhausting before anyone talks about surgery.
When surgery is the right call
Constant numbness, visible wasting of the thumb-pad muscles, or severe nerve conduction findings mean the nerve is being damaged, and a surgical release is appropriate — we refer those cases out without hesitation. For everyone else, the evidence supports starting conservative, and starting with an exam that looks at the whole pathway.
If your hands are tingling and the splint isn't cutting it, the answer might be eighteen inches north of where you've been looking.
