Pain on the back of your hand typically comes from one of a handful of causes: inflamed or damaged tendons, arthritis in the finger or wrist joints, a ganglion cyst, nerve compression, or a bone injury. The right explanation depends on exactly where the pain sits, what makes it worse, and how it started. Here’s how to sort through the most likely possibilities.
Tendon Problems
The tendons that straighten your fingers and pull your wrist back run along the back of your hand, and they’re a common source of dorsal hand pain. When these tendons become irritated or start to break down, pain often shows up during gripping, shaking hands, turning doorknobs, or lifting objects with your palm facing down. You might notice it most when you pick up a coffee mug or twist open a jar.
Despite the name “tendinitis,” the issue is frequently not true inflammation. Tissue studies show that chronically painful tendons often contain disorganized collagen fibers and excess blood vessel growth rather than the classic signs of inflammation. This is technically called tendinosis, and it matters because it means the tendon is wearing down rather than just flaring up. Rest alone may help an acute flare, but longer-lasting pain usually needs targeted rehab exercises to rebuild tendon structure.
Jobs or hobbies involving repetitive hand bending and twisting raise your risk. CDC data shows that repetitive hand motions at work are significantly associated with hand and wrist problems, with occupations like machine operation, assembly work, construction, and farming carrying especially high rates.
Arthritis in the Hand Joints
Arthritis is one of the top causes of pain across the back of the hand, and two types account for most cases. Osteoarthritis tends to hit the joints closest to your fingertips (the DIP joints) and the middle finger joints (PIP joints), along with the base of the thumb. Rheumatoid arthritis favors the knuckle joints (MCP joints) and middle finger joints, though it can also affect the fingertip joints in up to 37% of cases.
Both types can cause morning stiffness, swelling, and tenderness that you can see and feel across the back of the hand. With osteoarthritis, morning stiffness can last over an hour, which surprises many people who assume only rheumatoid arthritis causes prolonged stiffness. The key differences: osteoarthritis usually develops gradually, worsens with use, and tends to appear after age 40. Rheumatoid arthritis often affects both hands symmetrically and can start earlier.
Age is the single strongest risk factor. People over 40 are roughly five times more likely to develop hand and wrist arthritis than younger adults.
Ganglion Cysts
If you can see or feel a firm, rubbery bump on the back of your hand or wrist, it’s likely a ganglion cyst. These fluid-filled sacs grow from a joint capsule or tendon sheath and are typically 1 to 2 centimeters across. They feel well anchored in place, not freely movable under the skin.
Ganglion cysts on the back of the hand may cause pain by compressing small nerve branches that run beneath the skin. Some are painless and only bothersome cosmetically, while others ache during wrist movement or when pressure is applied directly. They can fluctuate in size, sometimes appearing to shrink or grow over weeks. Many resolve on their own, but persistent or painful cysts can be drained with a needle or removed surgically.
Nerve Compression
A branch of the radial nerve runs along the thumb side of the back of your hand, and when it gets pinched, you feel pain, tingling, or numbness across that area. This is sometimes called Wartenberg’s syndrome. Symptoms tend to concentrate on the outer (thumb-side) portion of the back of the hand and forearm.
Common culprits include tight watchbands, handcuffs, or anything that presses repeatedly against the outer wrist. Repetitive twisting motions can also irritate the nerve where it passes between forearm muscles. The hallmark sign is decreased sensation over the back of the hand near the thumb, sometimes accompanied by a burning or buzzing feeling. Unlike tendon problems, nerve compression pain doesn’t necessarily get worse with gripping. It’s more about position and pressure.
Fractures and Bone Injuries
The five metacarpal bones form the flat framework of the back of your hand, and fractures here are common. Falls onto an outstretched hand and sports injuries are the usual causes. A “boxer’s fracture” specifically affects the metacarpal below the little finger, typically from punching a hard surface.
Signs of a metacarpal fracture include sharp pain, swelling, bruising, and difficulty moving or using the hand. You may notice a visible bump or deformity that wasn’t there before. Because the metacarpals are surrounded by ligaments, tendons, and muscles, a fracture often damages these soft tissues too, which adds to swelling and stiffness during recovery. If you had a clear injury and the pain is intense, localized, and accompanied by swelling or bruising, a fracture needs to be ruled out with an X-ray.
Dactylitis: Whole-Finger Swelling
Sometimes pain on the back of the hand comes with an entire finger swelling up like a sausage. This is dactylitis, and it signals something different from a localized tendon or joint problem. It’s associated with psoriatic arthritis, reactive arthritis, and other inflammatory conditions. If one or more of your fingers looks uniformly puffy rather than swollen at a single joint, that pattern is worth bringing to a doctor’s attention because it often points to a systemic inflammatory condition that benefits from early treatment.
Who’s at Higher Risk
Age matters more than almost anything else. After 40, rates of hand and wrist arthritis climb sharply. But occupation plays a role too. Mining, military service, agriculture, and construction carry some of the highest rates of hand and wrist problems. Manufacturing, retail, and even finance and office work show elevated risk as well, likely because of sustained keyboard use and repetitive hand movements. If your job involves repeated gripping, twisting, or vibrating tools, your hands are absorbing more cumulative stress than average.
Simple Exercises That Help
For tendon-related pain, gentle range-of-motion exercises can rebuild strength and flexibility. Start slowly and stop if pain increases.
- Wrist flexion and extension: Rest your forearm on a table with your hand hanging off the edge, palm down. Bend your wrist upward while making a fist, hold for 6 seconds, then lower your hand and straighten your fingers. Hold for 6 seconds. Repeat 8 to 12 times.
- Wrist extensor stretch: Extend your arm in front of you and point your fingers toward the floor. With your other hand, gently press your wrist further into the stretch until you feel a moderate pull along your forearm. Hold for 15 to 30 seconds. Repeat 2 to 4 times.
- Side-to-side wrist bending: Rest your forearm on a table, palm down. Slowly tilt your wrist toward your thumb side, hold for 6 seconds, then toward your pinky side, hold for 6 seconds. Repeat 8 to 12 times.
- Hand flips: Sit with your forearm resting on your thigh, palm down. Flip your hand over so your palm faces up, then flip back. Alternate 8 to 12 times. This builds rotation strength without heavy loading.
These exercises work best for mild to moderate tendon pain. Arthritis-related stiffness also responds to gentle range-of-motion work, though the underlying condition may need separate management.
Signs That Need Urgent Attention
Most back-of-hand pain improves with rest, ice, and gradual movement. But certain signs point to something that shouldn’t wait. Get evaluated promptly if you notice a visible deformity or suspect a broken bone, if there’s an open wound, or if the pain is severe and not improving. Warmth, redness, and tenderness combined with a fever over 100°F (37.8°C) suggest a possible infection, which can become serious quickly in the hand’s tightly packed compartments. Rapid swelling after an injury, inability to move your fingers, or numbness that doesn’t resolve also warrant same-day medical evaluation.