Part of Carpal tunnel syndrome
Carpal tunnel vs cubital tunnel: how to tell which nerve
Warning signs, and when to get help
Carpal tunnel vs cubital tunnel: which nerve is it?
Carpal tunnel vs cubital tunnel is a question about two nerves, not two kinds of hand pain. One is the median nerve, squeezed at the wrist. The other is the ulnar nerve, squeezed where it passes the inner elbow. Everything else that separates them follows from those two facts, because each nerve carries feeling from its own part of the hand and runs its own set of muscles.
That is why the most useful thing you can bring to an appointment is not a name. It is an accurate description of where your numbness sits, when it arrives, and what your arm was doing at the time. A clinician can do a great deal with that and very little with "I think it might be carpal tunnel".
This page will not give you the answer. The two overlap often enough that no symptom pattern settles it on its own, and an examination, with a nerve test where one is needed, is what settles it. If you already know which one you are dealing with, the carpal tunnel syndrome program and the cubital tunnel syndrome program are where the management sits, and the wrist and hand pages cover the neighbors.
Which fingers does each one affect?
Start with the ring finger, because it is split between the two nerves and it is where most of the confusion lives.
OrthoInfo gives the median nerve feeling in the thumb, the index and middle fingers, and half of the ring finger on the thumb side, and lists the symptoms of carpal tunnel syndrome as numbness, tingling, burning and pain mainly in the thumb and the index, middle and ring fingers. The same source gives the ulnar nerve feeling in the little finger and half of the ring finger, and says numbness and tingling in those two fingers are the common symptoms of entrapment at the elbow.
So the honest short version is a line drawn down the ring finger. Thumb side points toward the wrist and the median nerve. Little finger side points toward the elbow and the ulnar nerve.
Two cautions come with that map, and both matter more than the map does.
The finger pattern is a pointer, not a diagnosis. A squeezed nerve does not read anatomy textbooks, and a person reporting their own numbness in the middle of the night is not a precision instrument.
And the NHS page on carpal tunnel syndrome does not name fingers at all. Its list stays at the level of the whole limb: numb hands, pins and needles or tingling, an ache or a pain that can sit anywhere from the fingers to the arm, and a thumb that feels weak or will not grip. Readers who start there arrive here unsure, and reasonably so.
What position sets each one off?
Here is where the two separate more cleanly than the fingers do. One is a wrist condition and the other is an elbow condition, and each has a position that provokes it.
For carpal tunnel syndrome, OrthoInfo says symptoms often come on when the hand and wrist are held in the same position too long, gives holding something for a prolonged period with the wrist bent forward or backward as the daytime version, calls night symptoms very common, and explains them by the fact that many people sleep with the wrist bent.
For the ulnar nerve at the elbow, the same source says symptoms happen more often when the elbow is bent, naming driving and holding the phone, adds that leaning on the elbow for long periods puts pressure on the nerve, and notes that many people sleep with their elbows bent too.
The useful question is not which fingers. It is what was bent. A wrist curled under a pillow and an elbow folded up with the hand near your face are different habits, and most people can say which one they wake in once they have been asked.
Both wake people at night, though, so night symptoms on their own separate nothing. What to do about each position is on its own page: how to sleep with carpal tunnel for the wrist, and the cubital tunnel syndrome program for the elbow. The two answers are not interchangeable.
What gets weak, and what that looks like in daily life
Weakness is the part a physiotherapist or physical therapist looks at hardest, because it changes the timescale.
The median nerve controls the muscles around the base of the thumb, in OrthoInfo's words, and the NHS names a weak thumb or difficulty gripping among the symptoms of carpal tunnel syndrome. So the trouble shows up in the thumb first: pinching, holding, and the small jobs the thumb drives.
The ulnar nerve runs most of the small muscles the hand uses for fine movements, and OrthoInfo credits it with some of the bigger forearm muscles that make a strong grip as well. It describes a weakening grip and difficulty with finger coordination, giving typing and playing an instrument as the examples, and it says those symptoms are usually seen in the more severe cases of compression. So a mild ulnar problem can be numbness and tingling with nothing weak yet. When weakness does come, it is a different kind of clumsiness, spread across the whole hand rather than sitting in one digit.
Each nerve also has a place where long compression shows on the outside of the hand, and the two places are different. For the median nerve it is the fleshy pad at the base of the thumb, which OrthoInfo says can become visibly smaller in very severe cases. For the ulnar nerve, OrthoInfo's photographs of wasting show the muscle between the thumb and the index finger, and the page says wasting cannot be reversed once it has happened.
None of that is something to monitor at home for a few more months. Constant numbness, a muscle that looks thinner than on your other hand, or a hand that keeps dropping things changes how soon this needs to be seen, for either nerve, and the warning list at the foot of this page gives each one with its own timeframe.
Can you have both at the same time?
Yes, and often enough that a good clinician checks for the second one while assessing the first.
The clearest figures come from surgical records, so read the population carefully before you apply them to yourself. Among patients operated on for ulnar nerve compression at the elbow at one New York institution across 2014 and 2015, 23 percent also had a carpal tunnel release, and in New York State administrative data covering 2003 to 2014 the share of such patients treated for both conditions at once rose from about 23 percent to 45 percent. Most of those treated for both had objective evidence of both, and the authors concluded that a rate of at least one in four sits well above the general population rate of carpal tunnel syndrome, so a surgeon assessing an elbow should keep a high suspicion of median nerve compression as well (Shulman and colleagues, 2020).
Those are people who reached an operation. They are not a sample of everyone with a tingling hand, and the figures cannot be turned into your own odds.
Looking from the wrist end, one smaller study tested 165 limbs that met the standard electrical criteria for carpal tunnel syndrome and found the ulnar nerve also affected on testing in about 9.7 percent of them, with the wrist and the elbow coming up about equally often among those. Involvement was commoner in patients whose symptoms included the ring and little fingers (Vahdatpour and colleagues, 2007). That is an electrical finding in people already diagnosed with carpal tunnel syndrome, which is not the same thing as carrying two diagnosed conditions.
The practical point survives the caveats. Having one does not protect you from the other, and finding one does not mean the search is over.
What if the whole hand feels numb?
Plenty of people cannot use the finger map at all, because the numbness does not respect it. That does not mean two nerves are involved, and there is good evidence on exactly this.
In a study of 165 hands belonging to 103 patients with confirmed carpal tunnel syndrome, symptoms followed the median nerve's territory in 60.6 percent of hands, covered the hand like a glove in 35.2 percent, and sat in the ulnar fingers in 4.2 percent. The authors found no clinical or electrical signs of ulnar nerve involvement in any of them. Hands with the glove pattern reported more severe symptoms, including night pain and numbness, while hands with the classic median pattern had the more severe measurable nerve deficits (Zanette and colleagues, 2006).
A hand numb all over is a common presentation of one squeezed nerve, not evidence of two. And worse-feeling symptoms are not the same as a worse-tested nerve, which is a good reason not to grade your own severity by how loud it is.
What the glove pattern does do is take the finger map out of play, and that is the moment an examination earns its keep. Note that these were people already diagnosed with carpal tunnel syndrome at a clinic, so the study says what the pattern means in that group, not what a numb hand means in general.
The other names you will see: ulnar tunnel and radial tunnel
Search either condition and two more tunnels turn up, so here is where they fit.
Ulnar tunnel syndrome is the same nerve as cubital tunnel syndrome, pressed in a different place. OrthoInfo describes the ulnar nerve being compressed at the wrist, on the palm side near where the wrist meets the hand on the little finger side, with numbness and tingling in the little finger and the outer part of the ring finger, and grip and pinch sometimes weak. Because it is the same nerve, the finger map cannot separate it from the elbow version. Only an examination can, and OrthoInfo notes that the ulnar nerve can also be squeezed beneath the collarbone.
Radial tunnel syndrome involves the third nerve of the arm. OrthoInfo's exercise program for it describes a painful condition caused by pressure on the radial nerve, most commonly at the elbow. The complaint that source names is pain, not numb fingers, which is why it rarely belongs in a conversation about which fingers are tingling.
Each of the three nerves has a glide exercise of its own here, the median nerve glide, the ulnar nerve glide and the radial nerve glide. They are listed for recognition, not as a self-prescription. Which one belongs in your program, if any, and how it should be done, is for the clinician who examines you.
What an assessment adds, and the part only you can bring
An examination reaches the things no symptom description can, and OrthoInfo's account of assessing the ulnar nerve shows what that means in practice. The clinician moves your neck, shoulder, elbow and wrist to see whether particular positions bring your symptoms on, checks feeling and strength through the hand and fingers, and checks whether the nerve slips out of its groove when the elbow bends. Tapping over the nerve at the funny bone is part of it, and the page is candid that this can produce a shock in a normal nerve, which is the reason doing it to yourself at home tells you nothing.
The same page explains why the neck gets examined too: pinched nerves in the neck can produce similar symptoms, and the ulnar nerve can be compressed beneath the collarbone or at the wrist rather than at the elbow. If your tingling arrives when you turn your head, or pain runs from your neck down the arm, that possibility is live. The site has pages on cervical radiculopathy, on neck pain and on thoracic outlet syndrome, which is pressure at the base of the neck. Numbness in both hands and both feet points somewhere else again, toward a more widespread nerve problem, and peripheral neuropathy covers that. If what bothers you most is an aching arm or shoulder rather than the fingers, can carpal tunnel cause shoulder pain works through the candidates for that.
Bring the map, then, because it is the one piece of evidence only you can collect. Before the appointment, shade in on your own hand, or on a drawing of it, exactly which fingers and which part of the palm go numb, and check which side of the ring finger is involved. Add the time of day, what the wrist and the elbow were doing, which tasks have become harder, whether one hand or both, and roughly how many weeks or months it has been going on. Ten minutes of that beats a month of reading comparisons.
Getting seen sooner, whichever nerve it is
Which nerve it is can wait for an appointment. Some of what follows cannot.
If you have pins and needles in an arm together with neck or arm pain, or your arm feels heavy or weak, the NHS advises asking for an urgent GP appointment or calling NHS 111. Wherever you live, get it checked the same day if nobody has looked at it yet.
Some signs sit above the question this page answers, and they apply whichever nerve turns out to be involved. Sudden one-sided weakness or numbness, drooping or slurred speech and the other stroke signs need emergency services, even if they pass. New numbness in the hand after a fall or a blow to the wrist or elbow, or a limb that has changed shape or turns cold, pale or blue, needs an emergency department the same day. Numbness in both hands with hands that have slowly become clumsy, or any new trouble with walking, your balance or your bladder, needs same-day medical advice or emergency services, because that pattern points at the spinal cord in the neck rather than at either tunnel.
Below that, two signs change the timetable without being emergencies, and they are the two this page has already named: numbness that is there all the time, and muscle that looks thinner on one hand than the other. Both are reasons to be seen within a few days rather than waited out, because a nerve squeezed hard for long enough may not fully recover. The full list, with the level of urgency attached to each line, is below.
Related exercise programs
Warning signs
Get emergency help now
- Emergency: any sign of a stroke, even if it goes away. That means a face that droops on one side, an arm you cannot lift or keep up, slurred or muddled speech, weakness or numbness on one side of your body or face, sudden blurred vision, double vision or loss of sight, trouble swallowing, sudden dizziness with unsteadiness or falling over, a sudden severe headache, or a sudden fall where your legs give way but you do not black out (a drop attack). Call emergency services straight away.
- Emergency: numbness, tingling or pins and needles in the hand after a fall or injury to the wrist, or a wrist that has changed shape or sits at an odd angle. The same applies to a bone showing through the skin or a cut that is bleeding heavily. Go to an emergency department or call emergency services straight away, and do not drive yourself. The wrist may be broken.
- If you have just hurt your arm and have severe pain, cannot move the elbow or heard a snap, do not exercise it. Go to an urgent care center or emergency department the same day. If the arm looks a different shape or sits at an odd angle, a bone is showing, or your arm or hand tingles, feels numb or turns cold, pale or blue, go to an emergency department straight away or call emergency services, and do not drive yourself.
- Emergency: new problems walking, for example your legs feel stiff, heavy or weak or you have become unsteady on your feet, new trouble controlling your bladder or bowels, or hands that suddenly become clumsy, for example you can no longer do up buttons. Call emergency services straight away. These can be signs of pressure on the spinal cord in the neck.
Get help today
- A wrist injury that has left the wrist swollen, bruised or so painful you cannot use the hand, without numbness or a change in shape. Get medical advice the same day.
- Numbness or tingling in both hands together with hands that have slowly become clumsy, for example trouble doing up buttons or dropping things. Get medical advice the same day. These can be signs of pressure on the spinal cord in the neck (cervical myelopathy) rather than a problem at the wrist. If the clumsiness or numbness gets worse quickly, call emergency services straight away.
- An electric shock feeling runs down your back or into your arms or legs as your head bends forward. Stop and get medical advice the same day.
- Pins and needles in an arm together with neck or arm pain, or an arm that feels heavy or weak, and nobody has checked it yet. Get medical advice the same day.
Book an appointment
- Numbness in the hand that is there all the time, the fleshy muscle at the base of your thumb looks flatter or thinner than on the other hand, or your thumb is getting weaker and you keep dropping things. See a doctor within a few days rather than waiting for it to settle. If the weakness is getting worse from day to day or spreads beyond the thumb, get medical advice the same day. In long-standing cases the nerve can be damaged for good, and surgery may be recommended to prevent that.
- Your hand is getting weaker, you keep dropping things, your fingers feel clumsy, the numbness is there all the time, or the web of muscle between your thumb and index finger, or the little finger side of your palm, looks thinner or hollow compared with your other hand. See a doctor within a few days rather than waiting for it to settle, because a nerve that has been squeezed hard for a long time may not fully recover. If the weakness is getting worse from day to day, or both hands are affected, get medical advice the same day.
- Tingling or numbness in your ring and little fingers that has lasted more than 6 weeks, even if it is mild. See a doctor in the next week or two, or within a few days if the symptoms are severe. OrthoInfo advises seeing a doctor for these symptoms if they are severe, or if milder symptoms have lasted more than 6 weeks, because muscle wasting from a squeezed nerve cannot be reversed.
Common questions
Which is worse, carpal tunnel or cubital tunnel?
Neither nerve is the worse one to have squeezed. What decides how much trouble you are in is how far the compression has gone, and both nerves have the same late point past which recovery is incomplete. For the median nerve, OrthoInfo describes long-standing cases with constant numbness and wasted thumb muscles as the ones where surgery may be recommended, and says that in very severe cases some people never completely regain normal sensation even after that release. For the ulnar nerve it says wasting can happen when the nerve has been badly or long compressed, and that once it has happened it cannot be reversed. Read that as a reason to get either one looked at while the numbness still comes and goes, rather than as a ranking. The warning list at the foot of this page gives the specific signs for each nerve with how soon to act.
Which one is more common?
Carpal tunnel syndrome, and by a wide margin in the research literature. The 2025 Cochrane review of treatment for ulnar neuropathy at the elbow, which is the medical name for cubital tunnel syndrome, describes it as the second most common entrapment neuropathy after carpal tunnel syndrome (Caliandro and colleagues, 2025). That is a useful piece of background and a poor guide to your own hand. Being the commoner condition does not make it the one you have, and plenty of people arrive at a hand clinic having assumed carpal tunnel for months because it is the name everybody knows.
Can a nerve test tell which nerve it is?
Often, although it is not ordered for everybody. The NHS says carpal tunnel syndrome can usually be diagnosed by asking about your symptoms and examining your hand, and that where a health professional is not sure you may be referred to hospital for a nerve conduction test or a scan such as an ultrasound or MRI. OrthoInfo describes what the nerve test does: a current is sent down the arm and the test looks for slowing along its path, which is how the site of the squeeze is located, and it can also show whether the compression is causing damage to muscle. Small needles go into some of the muscles the nerve controls as part of it. Whether you need one is a decision for the clinician examining you, and the answer depends on how clear your pattern is and on what is being planned.
If I have symptoms on both the thumb side and the little finger side, do I need two programs?
Ask the person who examines you, because that pattern has more than one explanation and they are managed differently. A hand that feels numb all over is common in carpal tunnel syndrome on its own, as the glove-pattern research further up this page shows. Two nerves genuinely squeezed in the same arm is a real situation too. So is a problem higher up, in the neck or at the base of the neck, which can involve the whole hand from a single site. On this site the carpal tunnel syndrome program and the cubital tunnel syndrome program are separate because they are built around different things, a wrist position in the first and an elbow position in the second, and working through both at once without an assessment is how people end up doing a lot and changing nothing.
References
- American Academy of Orthopaedic Surgeons. Carpal tunnel syndrome. OrthoInfo. https://www.orthoinfo.org/en/diseases--conditions/carpal-tunnel-syndrome/
- American Academy of Orthopaedic Surgeons. Cubital tunnel syndrome (ulnar nerve entrapment at the elbow). OrthoInfo. https://www.orthoinfo.org/en/diseases--conditions/ulnar-nerve-entrapment-at-the-elbow/
- American Academy of Orthopaedic Surgeons. Ulnar tunnel syndrome of the wrist. OrthoInfo. https://www.orthoinfo.org/en/diseases--conditions/ulnar-tunnel-syndrome-of-the-wrist/
- American Academy of Orthopaedic Surgeons. Therapeutic exercise program for radial tunnel syndrome. OrthoInfo. https://www.orthoinfo.org/en/recovery/radial-tunnel-exercise-pdf/
- NHS. Carpal tunnel syndrome. Page last reviewed 17 April 2024. https://www.nhs.uk/conditions/carpal-tunnel-syndrome/
- Caliandro P, La Torre G, Padua R, Giannini F, Reale G, Padua L. Treatment for ulnar neuropathy at the elbow. Cochrane Database of Systematic Reviews. 2025;(4):CD006839. https://doi.org/10.1002/14651858.CD006839.pub5
- Shulman BS, Bekisz JM, Lopez CD, Maliha SG, Mahure SA, Hacquebord JH. The association between concomitant ulnar nerve compression at the elbow and carpal tunnel syndrome. Hand (New York). 2020;15(3):335-340. https://doi.org/10.1177/1558944718813669
- Zanette G, Marani S, Tamburin S. Extra-median spread of sensory symptoms in carpal tunnel syndrome suggests the presence of pain-related mechanisms. Pain. 2006;122(3):264-270. https://doi.org/10.1016/j.pain.2006.01.034
- Vahdatpour B, Raissi GR, Hollisaz MT. Study of the ulnar nerve compromise at the wrist of patients with carpal tunnel syndrome. Electromyography and Clinical Neurophysiology. 2007;47(3):183-186. PMID 17557651. https://pubmed.ncbi.nlm.nih.gov/17557651/
- Davies BM, Mowforth OD, Smith EK, Kotter MR. Degenerative cervical myelopathy. BMJ. 2018;360:k186. https://doi.org/10.1136/bmj.k186
- NHS. Symptoms of a stroke. https://www.nhs.uk/conditions/stroke/symptoms/
- NHS. Broken arm or wrist. https://www.nhs.uk/conditions/broken-arm-or-wrist/
Written and checked by the PocketPhysio editorial team. Last updated 2026-10-17.
This page is general education, not a diagnosis or a personal treatment plan. See a physiotherapist or doctor for advice about your own situation.