Written by Yuna Zhuang, Principal Hand Occupational Therapist at Phoenix Rehab, AHPC A1700999G.Clinically reviewed by Nigel Chua, Principal Hand Occupational Therapist & Director, AHPC A1300362Z.Last reviewed 3 November 2026.
Forearm pain usually comes from an overloaded muscle or tendon, often from gripping, lifting or keyboard work. Near the elbow it is often tennis or golfer’s elbow. A creak above the wrist on the thumb side points to intersection syndrome. Tingling points to a nerve. After a fracture or surgery, start with those questions.
Key takeaways
- Most forearm pain comes from muscles and tendons that are loaded faster than they adapt, and where it sits narrows down which.
- Pain near the outer elbow is often tennis elbow. Pain near the inner elbow is often golfer’s elbow.
- Deep aching in the back of the forearm can come from the radial nerve, and it rarely causes numbness.
- Severe forearm pain out of proportion to the injury, after a fracture, a crush or under a tight cast, needs the emergency department now.
- Severe muscle pain and swelling with dark urine after hard training also needs the emergency department now.
After a fracture, surgery or an injection
After a fracture or an operation at the wrist or elbow, an aching forearm and stiffness turning the palm up or down are common, and your surgeon’s protocol sets the limits. The forearm muscles have also been out of use. This table gives the usual pattern, and the page that covers each one in detail.
| What happened | Pain that is common afterward | Read next |
|---|---|---|
| Wrist fracture, in a cast or with a plate | Stiffness turning the palm up, and an aching forearm once the cast comes off | Still stiff after a broken wrist |
| Elbow fracture | Aching forearm, stiffness straightening the elbow and turning the hand | Elbow Fracture Recovery Program |
| Radius or ulna fixed with a plate | A sore scar, stiffness turning the forearm, and a weak grip | Hand therapy after surgery |
| Distal biceps repair | Ache at the front of the elbow. Numbness on the thumb side of the forearm is worth reporting. | Distal biceps rupture |
| Tennis elbow surgery | Soreness over the outer elbow and the upper forearm on gripping | Tennis elbow |
| Cubital tunnel release | A sore scar at the inner elbow, and tingling in the ring and little fingers that changes over weeks | Cubital Tunnel Recovery Program |
If you were put in a splint that stops the forearm turning, Muenster and sugar tong splints explains why, and what it means for the weeks after.
Had an injection for elbow or forearm pain?
A steroid or other injection for tennis elbow, golfer’s elbow or De Quervain’s may be part of your story. Whether to have one, or another, is between you and your doctor. Pain easing afterward does not tell you how much load the tendon can take, because that is tested separately. Therapy after an injection covers what that looks like.
Where does your forearm hurt?
Start from the spot and what sets it off. Each row is the usual pattern, not a diagnosis.
| Where | What usually goes with it | What it often is |
|---|---|---|
| Outer side, just below the elbow | Hurts to grip, lift a kettle with the palm down, or turn a door handle | Tennis elbow |
| Inner side, just below the elbow | Hurts to grip, carry or turn the palm down against resistance | Golfer’s elbow |
| Back of the forearm, a few centimeters below the elbow | Deep ache, tender over the muscle, worse straightening the fingers or turning the palm up, little or no numbness2 | Radial tunnel syndrome |
| Back of the forearm, thumb side, a few centimeters above the wrist | Pain and swelling, sometimes a creak, after rowing, paddling or a new weights block3 | Intersection syndrome |
| Thumb side of the wrist, running up the forearm | Worse lifting a baby or wringing a cloth | De Quervain’s tenosynovitis |
| Inner forearm, with numb thumb, index and middle fingers | Worse at night, eased by shaking the hand | Carpal tunnel syndrome |
| Inner forearm, with tingling ring and little fingers | Worse with the elbow bent, such as holding a phone | Cubital tunnel |
| The whole forearm, a broad ache | Builds over long hours of typing and mouse work | Repetitive strain injury |
| Down the arm from the neck or shoulder | Changes when you turn your head, sometimes with tingling | A pinched nerve in the neck |
| One spot of bone after a fall | Hurts to press, and hurts to turn the palm up or down | A possible fracture. See a doctor the same day, and the doctor decides on an X-ray |
Inner forearm pain
Inner forearm pain usually comes from the muscles and tendons that bend the wrist and fingers, which work every time you grip. Near the elbow it is often golfer’s elbow. Tingling in the fingers points to the median or ulnar nerve. A climber’s or rower’s forearm that goes tight during hard effort has its own pattern.
Yuna, who wrote this page, is a former climber, and climbers know the difference between a pump and an injury. A pump is a tight, full forearm that lets go after a few minutes of rest. An injury is one sore line or spot that is still there the next morning, and hurts when you pick up a bag. A forearm that goes rock-hard and weak at the same point in every hard effort, then settles within minutes, can be exertional compartment syndrome, which is rare and a question for a doctor soon.
Outer and upper forearm pain
Pain on the outer or upper forearm is most often tennis elbow, which can ache well below the bony point of the elbow. A deep ache further down the forearm, with tenderness over the muscle, can be the radial nerve instead. Both hurt on gripping, and the two can occur together.
Radial tunnel syndrome is tender along the path of the nerve under the muscles of the upper forearm, and it can tingle when tapped there. The radial nerve at this level mostly drives muscles, so numbness is uncommon.2 A wrist that drops, or fingers that will not straighten, is a same-day doctor problem and is on the list below. Radial nerve palsy covers that in detail.
Forearm muscle pain after the gym, climbing or lifting
Forearm muscle soreness that starts a day after a hard workout, sits on both sides of the muscle and eases over two or three days is normal. A strain usually starts with one moment, a sharp pull during a lift, and hurts on one spot when you grip against resistance. A bruise that spreads down toward the wrist over a few days is common after a strain. See gym injuries and rock climbing injuries for how each sport loads the arm.
Forearm pain from typing, a mouse or a phone
A broad forearm ache that builds over days at a desk is common, and it is often non-specific: nothing focal to find on testing.1 Clear tests do not mean the pain is imagined. Studies link it to repetition, force, long periods without a break, and awkward posture.1 Those are the things to change first. Check the desk setup in the repetitive strain injury page and the wider picture in office syndrome.
What to do first, and exercises that are worth doing
- Change the load before anything else. Cut the sets, the hours or the grip force by about a third for a week or two, and see what the pain does.
- Keep the arm moving. Stopping completely usually calms it, and then it flares in the week you go back.
- Do not stretch into tingling. A stretch that brings on tingling is pulling on a nerve, so stop that one.
- Add load slowly once it settles. Hold a light grip or wrist lift still for 30 to 45 seconds, then build to slow wrist curls and grip work over weeks. Some discomfort during the exercise is usually acceptable if it settles by the next morning.
- A forearm band is optional. Some people grip with less pain wearing one. It changes how the load passes through the tendon, and it does not build strength. The tennis elbow page covers where it goes.
Is this normal?
Usually expected: soreness for two or three days after a hard workout or a new exercise. An achy forearm for some weeks after a cast comes off, as the muscles go back to work. After surgery, a tender scar, some swelling and a weak grip.
Worth getting checked: pain that is no better after two weeks of lighter load. Tingling that comes back night after night. A forearm that still will not turn fully at the point your surgeon expected. A grip that stays weaker than the other hand from one month to the next.
When to see a doctor first
- Call 995 for pain in the arm with chest pain or pressure, breathlessness or sweating. For sudden weakness or numbness in one arm with a drooping face, slurred speech or confusion. For a wound bleeding heavily that firm pressure does not slow.
- Go to the emergency department now if the forearm looks bent or bone shows. If the hand turns cold, pale or blue and stays that way. If pain is severe and far out of proportion after a fracture, a crush or under a tight cast, or gets much worse when the fingers are gently straightened: forearm compartment syndrome is treated urgently, and pain is its earliest sign.4 For severe muscle pain and swelling with dark, cola-colored urine after hard training. For a forearm that is red, hot and swollen with fever, or red streaks running up the arm.
- See a doctor the same day after a fall or blow if one spot of bone hurts to press, or you cannot turn your palm up or down. For a pop at the elbow with a weak palm-up turn. For a wrist that drops or fingers that suddenly will not straighten. For new numbness or weakness in the hand. For a swollen, tight, painful forearm with no injury to explain it. After surgery, contact your surgeon the same day if the wound is red, leaking or more painful, or you have a fever.
- See a doctor soon for numbness that wakes you at night. For a forearm that goes rock-hard and weak with every hard effort. For a lump that is growing, deep pain at night that does not change with position, or forearm pain with weight loss or fever.
Where are you with this right now?
1. It was a heavy week, and it is settling
You climbed three days in a row, or you moved house, or the new gym program had too many pull-ups. It is less sore each day and the grip is coming back. That is a forearm behaving as most do. Drop the load for a week, bring it back in steps, and you do not need us for this. We would rather say so.
2. It has stopped improving
The mouse went to the other hand in August. Ten weeks on, the kettle hurts to lift with the palm down, the gym bag goes on the other shoulder, and you have stopped doing pull-ups without telling anyone why. You know exactly which door handle at the office you open with your left.
You rested it for two weeks. You foam-rolled it, stretched it, and bought the band. It settled, and then one long day at the desk or one climbing day brought it straight back. Rest lowers the load for a while, and it does not raise what the tendon can take.
The ache may be quieter than it was. Has anyone tested which muscle, tendon or nerve it is, or measured your grip against the other arm?
Finding the real problem is half the battle. Treating it is the other half. One Assessment & Treatment with a hand therapist who works only on the finger, hand, wrist, forearm and elbow measures grip with the elbow bent and straight, and turning of the forearm in degrees against the other side. It tests the wrist and finger tendons one at a time, and taps along the radial, median and ulnar nerves. If the pattern needs a doctor, a scan or a nerve test, we say so and write to your doctor. If it does not, treatment starts in the same appointment, and you leave knowing your stage, what limits you and what Stage 4 requires. If this has gone on for months, the Stalled Recovery Review is three visits over three weeks with the same therapist.
3. You have had surgery, or a fracture
The cast is off, or the plate is in, and the forearm will not turn enough to take change from a cashier. The surgeon deals with the bone. The weeks after decide how the stiffness, the scar and the weak grip behave, within the limits your surgeon sets. See the Wrist Fracture Recovery Program, hand therapy after surgery and the recovery programs. All of it runs on the four stages of The Phoenix Recovery Protocol.
Questions people ask
What causes forearm pain?
Forearm pain most often comes from an overloaded muscle or tendon, such as tennis or golfer’s elbow, or repeated strain from typing and gripping. Nerves at the wrist, elbow or neck can also cause it, as can a fracture after a fall. Where it hurts, and whether fingers tingle, narrows it down.
What are the symptoms of an upper forearm strain?
An upper forearm strain usually starts with a sharp pull during a lift or a grip, then hurts on one spot when you grip or turn the hand against resistance. There may be swelling or a bruise that drifts toward the wrist. Most mild strains ease over a few weeks with lighter load.
How long does forearm pain last?
Soreness after hard training usually eases in two or three days. A mild strain usually eases in a few weeks. Tendon pain that has built over months usually takes several months of graded loading. Pain no better after two weeks of lighter load is worth having checked.
Can forearm pain come from the neck or shoulder?
Yes. A pinched nerve in the neck can send pain, tingling or weakness down the forearm into the hand. A clue is that the pain changes when you turn your head or tilt it. New weakness or numbness needs a doctor the same day, and pain with no clear cause is worth having checked.
Can forearm pain be cancer?
Forearm pain is rarely caused by cancer. Most comes from muscles, tendons and nerves. See a doctor soon if you have a lump that is growing, deep pain at night that does not change with position, or pain with fever or weight loss you cannot explain. These signs have other causes too.
Should I rest or exercise a sore forearm?
Usually both, in that order. Lighten the load for a week or two, keep the arm moving, then build back with slow grip and wrist exercises. Stop any stretch that brings on tingling. Severe muscle pain and swelling with dark urine after training needs the emergency department now.
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Next step
Find out which stage you are in
Pain is the first thing to leave. Movement and strength are the last things trained back, and most people stop before that part is done. One Assessment & Treatment is a single 45-minute appointment at $230, nett, no GST. Your therapist finds what is actually limiting your forearm, treats it in the same appointment, and you leave with your current stage and a written plan.
Phoebe replies on WhatsApp with a clinic and two times. Bring any scan report, surgeon’s letter or splint. Prefer to phone? Each of our five clinics has its own number on the clinics page. No referral needed to book.
Related reading
Sources: 1. Palmer KT. Pain in the forearm, wrist and hand. Best Pract Res Clin Rheumatol. 2003;17(1):113-135. 2. Steinberg DR. Radial tunnel syndrome. MSD Manual Professional Edition. Reviewed May 2024. 3. Beutel BG, Taylor K, Michols NJ, Taqi M. Intersection syndrome. StatPearls. Updated May 2025. 4. Cha J, York B, Tawfik J. Forearm compartment syndrome. Eplasty. 2014;14:ic10.
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