Elbow and forearm pain most often comes from overworked tendons, compressed nerves, or inflamed soft tissue. The specific location of your pain, whether it’s on the outer side, inner side, back, or front of your elbow, is the single best clue to what’s going on. Most causes are tied to repetitive motions at work, during sports, or even from daily computer use, and the majority resolve within weeks to months with the right approach.
Outer Elbow Pain: Tennis Elbow
The most common cause of elbow and forearm pain is lateral epicondylitis, better known as tennis elbow. It affects 1 to 3% of the general population, with the highest rates in people aged 35 to 55. Despite the name, most people who get it have never picked up a racket. It happens when the tendons on the outside of your elbow, the ones that help you extend your wrist and grip objects, develop small tears from repeated stress.
You’ll feel a burning or aching pain right on the bony bump on the outer side of your elbow. It often radiates down into your forearm and gets worse when you grip something, twist a doorknob, shake hands, or lift even a light object like a coffee mug. The pain tends to build gradually over weeks rather than starting suddenly.
Computer work is a surprisingly common trigger. Constantly gripping and moving a mouse fatigues the same forearm extensor muscles involved in tennis elbow. Over time, even this low-intensity repetition causes wear and breakdown in the tendon. A mouse positioned too far from your body forces you to overextend your forearm repeatedly, compounding the problem.
Inner Elbow Pain: Golfer’s Elbow
Pain on the inside of your elbow points to medial epicondylitis, or golfer’s elbow. This involves the tendons that control your wrist and fingers on the palm side of your forearm. It’s triggered by forceful or repetitive wrist and finger motions: improper weight lifting (especially curling your wrists during biceps exercises), throwing sports, and manual occupations like construction, plumbing, and carpentry.
To develop golfer’s elbow, the aggravating activity generally needs to happen for more than an hour a day over many days. The pain centers on the inner bony bump of the elbow and can radiate down the forearm toward your wrist. Gripping, squeezing, and lifting all tend to make it worse. It feels similar to tennis elbow but on the opposite side of the joint.
Nerve Compression in the Elbow
If your pain comes with numbness, tingling, or weakness, a nerve is likely involved. Two nerve conditions commonly cause elbow and forearm symptoms.
Cubital Tunnel Syndrome
This is compression of the ulnar nerve, the “funny bone” nerve, as it passes through a narrow channel on the inside of your elbow. The hallmark symptoms are numbness and tingling in your ring finger and little finger, especially when your elbow is bent. Think of how those fingers fall asleep when you lean on your elbow or talk on the phone for a while. Pain can radiate from the elbow down to the hand or up toward the shoulder. Sleeping with your elbows bent is a common aggravator.
Radial Tunnel Syndrome
This condition is often confused with tennis elbow because the pain is also on the outer side of the forearm. The key difference is location: tennis elbow pain centers right on the bony bump at the elbow, while radial tunnel pain is about two inches further down the arm, over the spot where the radial nerve passes under a forearm muscle. Radial tunnel syndrome causes weakness when you try to stabilize your wrist while gripping and lifting, but it does not cause numbness or tingling in your skin because the sensory branch of the nerve splits off before entering the tunnel.
Other Common Causes by Location
Pain at the back of the elbow often involves the olecranon, the pointy bone you rest your elbow on. Olecranon bursitis creates a visible, fluid-filled swelling over that bone, sometimes warm to the touch. It’s common in people who frequently lean on hard surfaces. Triceps tendon problems and stress fractures also cause posterior pain, typically in athletes who do a lot of throwing or pressing movements.
Pain at the front of the elbow is less common but can signal biceps tendon irritation (usually felt when lifting or rotating your forearm), or in some cases, inflammatory joint conditions like gout or rheumatoid arthritis. These tend to cause stiffness and swelling inside the joint itself, not just along the tendons.
What Makes It Worse
Regardless of the specific condition, a few patterns drive most elbow and forearm pain. Repetitive gripping is the biggest culprit. Whether you’re squeezing a mouse, a wrench, a tennis racket, or a barbell, the forearm muscles doing that work all anchor at the elbow. When those muscles fatigue faster than they can recover, the tendons at their attachment points begin to break down.
Workstation setup plays a larger role than most people realize. A keyboard that’s angled upward at the back increases wrist strain. A mouse placed too high or too far away forces your forearm to reach repeatedly. Cluttered desk space makes you extend and twist more often than necessary. Even constantly curled fingers, common when gripping a mouse for hours, contribute to tendon overload at the elbow.
Managing Pain at Home
For most tendon-related elbow pain, the first step is reducing the activity that triggered it. This doesn’t mean total rest. Complete immobilization can actually slow healing because tendons need some controlled loading to repair properly. The goal is to back off from the specific motion causing pain while staying generally active.
Ice applied in 10-minute intervals can help with pain relief in the early stages. Brief cooling constricts blood vessels and numbs the tissue, but overdoing it can interfere with the inflammatory process your body needs to begin healing. A compression wrap can help control swelling if the area is visibly puffy.
The most effective active treatment for tendon pain, particularly tennis elbow, is a specific type of strengthening called eccentric exercise. This involves slowly lowering a light weight with your wrist, which loads the tendon in a controlled way that stimulates repair. A typical protocol is three sets of 15 repetitions, once or twice daily, for 6 to 12 weeks. Research consistently shows this approach reduces pain and improves grip strength. Even without any treatment at all, about 83% of tennis elbow cases improve within a year, but eccentric exercise speeds that timeline significantly.
For nerve-related symptoms like cubital tunnel syndrome, simple changes can make a big difference. Avoiding prolonged elbow bending, not leaning on the inner elbow, and wearing a light splint at night to keep the elbow straighter all reduce pressure on the ulnar nerve.
Workstation Fixes That Help
If computer use is part of the problem, a few adjustments can cut the strain on your forearm. Position your mouse at your side with your arm close to your body, not reaching forward or outward. Keep your keyboard directly in front of you with your wrists straight, not angled up or down. Clear your desk so you aren’t constantly reaching past obstacles. Every 30 minutes, pause and stretch your fingers back toward you for a few seconds. These changes feel minor, but they reduce the cumulative load on the same tendons and muscles that are causing your pain.
Signs That Need Prompt Attention
Most elbow and forearm pain is a nuisance, not an emergency. But certain symptoms warrant faster evaluation. Persistent forearm tightness combined with tingling, burning, or numbness, especially if the skin looks pale or a pulse feels weak at the wrist, can indicate compartment syndrome, a condition where pressure builds inside the muscle compartment and restricts blood flow. Pain that intensifies dramatically when someone stretches your forearm muscles is another warning sign.
Significant swelling with redness and warmth, particularly after a cut, scrape, or bite, suggests possible infection. Progressive weakness in your hand or fingers, where you’re dropping objects or can’t grip things you used to hold easily, points to worsening nerve compression that may need more than home management. And any elbow pain following a fall or direct blow, especially if you can’t straighten or bend the joint fully, should be evaluated to rule out a fracture.