Why Does My Arm Hurt? 10 Possible Causes of Arm Pain Skip to main content Menu Arm Pain Home Medical Reference Features Slideshows & Images Symptom Checker Health A-Z Home News Reference Slideshows Quizzes Videos WebMDRx Savings Card Top 12 Topics Coronavirus (COVID-19) CBD Oil Keto Diet Hepatitis C Diabetes Warning Signs Rheumatoid Arthritis Morning-After Pill Breast Cancer Screening Psoriatic Arthritis Symptoms Heart Failure Multiple Myeloma Types of Crohn's Disease A to Z GuidesReference Menu Why Does My Arm Hurt Written by WebMD Editorial Contributors Medically Reviewed by Brunilda Nazario, MD on June 14, 2021 In this Article Heart Problems Other Conditions If your arm hurts, there could be a number of reasons why. Arm pain is usually described as pain, discomfort, or stiffness that occurs anywhere from your shoulders down to your fingers in one or both arms. Most often, it’s caused by an injury or overuse. But there are many other health conditions that can cause your arm to hurt. Heart Problems Pain in your left arm could be related to a heart condition. Angina, which is caused by decreased blood flow to the heart, can cause pain in the arm shoulder. A heart attack can cause pain in one or both arms. A heart attack happens when the oxygen supply to part of your heart is cut off due to a blockage that prevents blood from flowing into the muscle. If you’re having a heart attack, your arm pain will probably come on suddenly. You also may experience:Chest pain or pressureShortness of breathDizzinessNausea If you’re having these symptoms, call 911. Sometimes, you can trace arm pain to a sports injury or simply using it too much. Other times, another condition could be to blame. Here are some other possible causes:Broken bones: If your arm starts to hurt right after a physical injury, you may have fractured it. You might also have swelling, bruising, numbness, or weakness. See your doctor right away so your arm will heal properly.Strain or sprain: An injury can cause damage to your muscles (a strain) or your ligaments (a sprain). Symptoms include pain, swelling, bruising, weakness, and muscle spasms. Both conditions will usually heal on their own, but if your symptoms are severe, you should see your doctor as soon as possible.Tendinitis: This happens when the tendons in your shoulder or arm become inflamed. Those are bands of tissue that connect muscles to bones. One example of tendinitis is “tennis elbow.” You could feel the pain in your shoulder, elbow, or wrist. It could be a result of an injury or – more often – overuse.Rotator cuff injury: This part of your shoulder is made up of muscles and tendons. It allows your shoulder to move or stay in place. As we age, tendons in the rotator cuff begin to wear down or tear. If you have a job where you make overhead motions over and over, you can damage it, too. Symptoms range from a dull ache and weakness in your arm to severe, constant pain. If you suspect a rotator cuff injury, see your doctor. You may need physical therapy.Carpal tunnel syndrome: Doing the same movements over and over with your wrist can cause damage to the main nerve in your hand. It can lead to numbness, tingling, weakness, and pain. Other Conditions In some cases, you can’t trace your arm pain to physical injury or overuse. It could be caused by diseased arteries in the upper part of your body. It might also be the result of stress, a new medication, or another medical condition, including:Pinched nerve: This happens when bones or tissues in your shoulder, neck, or elbow press against and compress a nerve. It causes pain, numbness, weakness, and tingling.Herniated disk: These are little cushions between the hard bones (vertebrae) that make up your spine. They allow your back to flex or bend. If one of the disks in your neck ruptures, it could cause a burning pain, numbness, weakness, and tingling or burning in your arms.Autoimmune diseases: If you have one of these conditions, your body’s natural defense system (immune system) attacks itself. Some of these -- like rheumatoid arthritis, lupus, and Sjogren's syndrome -- can cause pain in the neck, arms, elbows, wrists, and hands. Top Picks Manage Your Migraine What to Eat Before Your Workout Treating RA With Biologics Best Treatments for Allergies MS and Depression: How Are They Linked? Your Guide to Understanding Medicare further reading Visual Guide to Carpal Tunnel Syndrome Why Does My Hand Hurt? Why Does My Arm Hurt Top Arm and Hand Injuries From Exercise On-the-Job Injuries Repetitive Strain Injury Repetitive Stress Inury Arm Pain Topics Today on WebMD Risky Mistakes Pet Owners Make Some of these might surprise you. Depressed Guilty Feelings After Eating Symptoms of binge eating disorder. 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