Elbow pain most commonly comes from overuse of the tendons that connect your forearm muscles to the bony bumps on either side of the joint. This type of tendon irritation, called epicondylitis, affects 1% to 3% of the general population and accounts for the majority of elbow complaints. But your elbow is also a meeting point for nerves, a fluid-filled cushion called a bursa, and three bones, so the source of your pain depends on exactly where it hurts, what it feels like, and what triggers it.
Outer Elbow Pain: Tennis Elbow
If the pain is on the outside of your elbow, the most likely culprit is lateral epicondylitis, better known as tennis elbow. It happens when the tendons that attach your forearm muscles to the outer bony bump of your elbow get strained from repetitive motion. Despite the name, most people who develop it have never picked up a racket. Typing, using a mouse, turning a wrench, or any activity that involves repeated gripping and wrist extension can set it off.
The hallmark symptom is a burning or aching pain on the outer elbow that gets worse when you grip something, twist a doorknob, or lift with your palm facing down. It often starts mild and gradually worsens over weeks. You might notice a weak grip or find yourself dropping things you’d normally hold without trouble.
Most cases respond to rest, ice, rehab exercises, pain relief, and a forearm brace. You’ll likely start feeling better within a few weeks, but full tendon healing typically takes 6 to 12 months. That long timeline catches people off guard. The pain improves well before the tendon fully recovers, which makes it tempting to return to the activity that caused it too soon.
Inner Elbow Pain: Golfer’s Elbow
Pain on the inside of your elbow points to medial epicondylitis, or golfer’s elbow. It’s the mirror image of tennis elbow: the tendons on the inner side of the joint become sore, tender, and inflamed from repetitive stress. Golfers, climbers, weightlifters, and people who do manual labor involving a lot of wrist flexion are most prone to it.
The pain typically flares when you flex your wrist, squeeze something, or try to open a jar. It can radiate down the inner forearm toward your wrist. A doctor can usually diagnose either form of epicondylitis with a physical exam, feeling and moving your arm to pinpoint the source of tenderness and asking about your regular activities. Imaging is rarely necessary unless the pain doesn’t respond to treatment.
Tingling or Numbness: Nerve Compression
If your elbow pain comes with tingling, numbness, or a burning or electrical sensation in your hand, a compressed nerve is the likely cause. The most common version is cubital tunnel syndrome, where the ulnar nerve gets pinched as it passes through a narrow channel on the inside of your elbow. This is the same nerve responsible for that sharp jolt you feel when you hit your “funny bone.”
Cubital tunnel syndrome causes numbness and tingling specifically in the ring finger and little finger. It tends to be worse when your elbow is bent, which is why many people first notice it at night while sleeping with their arms folded. Over time, the nerve compression can weaken your grip and make your hand feel clumsy. Some people feel pain radiating from the elbow down to the hand or up toward the shoulder.
Mild cases improve by avoiding prolonged elbow bending. Wearing a padded brace at night that keeps the elbow straighter can make a significant difference. If symptoms persist or grip strength declines, a nerve conduction test can measure how fast signals travel through the nerve to confirm compression and guide next steps.
Swelling at the Tip: Bursitis
A visible, squishy swelling right at the point of your elbow, where you lean on a desk, is a classic sign of olecranon bursitis. The bursa is a small fluid-filled sac that normally cushions the bone, but it can become inflamed from pressure (leaning on hard surfaces), a direct blow, or infection. The swelling is most visible when your arm is straight.
The area around the swelling may feel warm and look red, especially if there’s an infection involved. Pain varies quite a bit. Some people have noticeable tenderness; others barely feel it and are mainly bothered by the lump itself. As bursitis resolves, you may feel small firm nodules of scar tissue under the skin. These usually go away on their own over time.
Infected bursitis is the version that needs prompt attention. If the swelling came on quickly, the skin is hot and red, and you have a fever or feel unwell, that combination suggests bacteria may be involved and warrants a medical visit rather than a wait-and-see approach.
Arthritis in the Elbow
Elbow arthritis is less common than arthritis in the knees or hips, but it can cause deep, aching pain that worsens with movement and stiffness that limits how far you can bend or straighten your arm. Osteoarthritis in the elbow is most often seen in people who have a history of heavy manual work or prior elbow injuries. Rheumatoid arthritis can also target the elbow, sometimes producing firm nodules near the joint.
Gout and pseudogout are two other forms of arthritis that occasionally strike the elbow. These tend to cause sudden, intense pain with visible swelling and warmth, often appearing without any injury or obvious trigger. The pain from a gout flare is typically severe enough to make even light contact with the elbow uncomfortable.
Pain That Isn’t Coming From the Elbow
Sometimes the problem isn’t in the elbow at all. A herniated disc in the neck can send pain down the arm that settles around the elbow. Shoulder problems can refer pain in a similar pattern. This type of “referred” pain often feels more diffuse and harder to pinpoint than pain from a local injury. If your elbow hurts but pressing on the joint doesn’t reproduce the pain, or if you also have neck stiffness or shoulder symptoms, the source may be higher up the arm.
Injuries That Need Immediate Attention
Most elbow pain develops gradually and improves with rest and simple measures. But certain situations call for urgent care. If your elbow looks visibly deformed or is bent at an unusual angle, especially after a fall or impact, that suggests a fracture or dislocation. Visible bone through the skin, significant bleeding, or a complete inability to move the joint are all reasons to go to an emergency room rather than scheduling a routine appointment.
Outside of those acute injuries, pain that has lasted more than a couple of weeks without improvement, keeps you awake at night, or is getting progressively worse despite rest is worth having evaluated. Persistent numbness or a noticeable loss of hand strength also warrants assessment, since nerve compression that goes untreated for too long can lead to muscle wasting that’s slower to recover.