Elbow pain during lifting is most often caused by irritation or small tears in the tendons that attach your forearm muscles to the bony bumps on either side of your elbow. The most common culprit, lateral epicondylitis (better known as tennis elbow), affects 1 to 3 percent of the U.S. population each year, typically in people over 40. But several other conditions can cause similar pain, and figuring out which one you’re dealing with comes down to where exactly it hurts and what movements make it worse.
Outer Elbow Pain: Tennis Elbow
If the pain is on the outside of your elbow and flares when you grip, twist, or lift something, tennis elbow is the most likely explanation. The tendons on the outer elbow connect to the muscles you use to extend your wrist and fingers. Any repetitive gripping or twisting motion can overload these tendons over time, creating tiny tears that become inflamed and painful.
You don’t need to play tennis to get it. Regularly lifting more than 45 pounds is a known risk factor, and everyday tasks like turning a doorknob, opening a jar, or shaking someone’s hand can trigger sharp pain once the condition sets in. The pain typically starts as a mild ache after activity and gradually worsens until even picking up a coffee mug becomes uncomfortable. You might also notice a weak grip, which makes lifting feel unreliable.
There’s actually a simple self-check you can do at home. Hold your phone in one hand with your arm fully straight, flex your wrist downward, then try to press the screen with your thumb, like taking a selfie. If this produces pain on the outer elbow, there’s a strong chance you have tennis elbow. A 2023 study found this “selfie test” had a sensitivity of 93 percent, meaning it correctly identified the condition in the vast majority of people who had it.
Inner Elbow Pain: Golfer’s Elbow
Pain on the inside of your elbow points to medial epicondylitis, commonly called golfer’s elbow. This involves the tendons that help you flex your wrist and grip tightly. It tends to hurt most during pulling or curling motions, like carrying a heavy bag with your arm at your side, doing bicep curls, or gripping a barbell.
Golfer’s elbow is less common than tennis elbow but produces a similar pattern: a dull ache that worsens with use, tenderness when you press on the inner bony bump of your elbow, and a grip that feels weaker than usual. The two conditions are mirror images of each other, just on opposite sides of the elbow, and both result from overloading tendons through repetitive strain.
Front-of-Elbow Pain: Biceps Tendon Issues
If the pain is at the front of your elbow, in the crease where your arm bends, the problem may be in your distal biceps tendon. This is the tendon that connects your biceps muscle to your forearm bone, and it takes the brunt of the force when you lift with your palm facing up or twist your forearm to turn something.
Biceps tendonitis at the elbow typically causes pain that worsens when bending the elbow against resistance or rotating your forearm. You might notice arm weakness, and some people feel a crackling or grating sensation when they move the joint. This condition is common in people who do a lot of heavy lifting or pulling, especially with an underhand grip.
Nerve Problems That Mimic Tendon Pain
Not all elbow pain during lifting comes from tendons. The ulnar nerve, the one responsible for the “funny bone” sensation, runs through a narrow tunnel on the inside of your elbow. When this nerve gets compressed or irritated, it causes a condition called cubital tunnel syndrome, and its symptoms can overlap with golfer’s elbow enough to cause confusion.
The key difference is the type of pain and where it travels. Tendon pain tends to stay localized around the elbow and feels like a deep ache or sharp twinge during specific movements. Nerve pain, by contrast, produces a burning or electrical sensation and often radiates down into the hand or up toward the shoulder. Numbness and tingling in the ring and little fingers are hallmark signs, especially at night or when your elbow stays bent for a long time. A weakened grip from cubital tunnel syndrome feels different too: more clumsy and uncoordinated rather than simply painful.
Why Lifting Makes It Worse
Your elbow is essentially a hinge caught between two powerful lever systems, your upper arm and your forearm. Every time you lift something, the tendons around the elbow have to transmit force from your muscles to your bones while also stabilizing the joint. When you grip an object, the forearm muscles contract hard, and all that tension concentrates at the tendon attachment points on those small bony bumps.
This is why lifting aggravates elbow pain so reliably. The heavier the load, the more force those tendons absorb. Certain grips are worse than others: lifting with your palm facing down (like picking up a suitcase) loads the outer tendons, while lifting with your palm facing up (like a bicep curl) loads the inner tendons and the biceps tendon. Even grip width matters. A tight grip on a thin handle generates more concentrated stress than wrapping your hand around something wider.
How to Manage It at Home
The American Academy of Orthopaedic Surgeons recommends a structured exercise program lasting 6 to 12 weeks for both tennis and golfer’s elbow. The cornerstone is eccentric exercise, which means slowly lowering a weight rather than lifting it. For tennis elbow, you’d hold a light dumbbell (1 to 3 pounds) with your forearm resting on a table, palm facing down, then use your other hand to help curl the weight up before slowly lowering it back down on your own. This controlled lowering stimulates the tendon to repair itself without the strain of a full lifting motion.
Start with no weight at all. Once you can do 30 repetitions on two consecutive days without increased pain, add one pound. Progress to two pounds, then three. The recommended schedule is 30 reps, once a day, five to seven days per week. Pair this with stretching: five repetitions of a sustained forearm stretch, four times daily.
In the early stages, reducing the activities that trigger your pain makes a significant difference. That doesn’t mean complete rest, which can actually slow healing, but rather avoiding the specific movements and loads that aggravate the tendon. A counterforce brace, the strap you wear just below the elbow, can redistribute force away from the damaged tendon during daily tasks. Ice after activity helps manage pain and swelling in the first few weeks.
Signs of Something More Serious
Most elbow pain from lifting is a tendon problem that responds to time and rehab. But certain signs suggest something beyond a simple overuse injury. Seek care if you can’t bend or straighten your arm, if you notice severe swelling or bruising that appeared suddenly, or if you have nerve symptoms like persistent numbness, tingling, or weakness in your hand. Pain that doesn’t improve after several weeks of reduced activity and home exercises also warrants a professional evaluation, since a partial tendon tear or a trapped nerve may need more targeted treatment.