When to Worry about Left Arm Pain (And When Not To)

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Medically-verified ways to identify and treat pain in the left arm
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We’ve all heard that left arm pain is a major sign of a heart attack. But when your left arm is hurting and nothing else is, or it’s been hurting for days at a time now, how do you know if it’s indicating a severe problem or a run-of-the-mill muscle injury? Left arm pain can have many causes, and we’re here to tell you all about them so you can decide whether to call your doctor or not. Rest assured that in most cases, left arm pain isn’t life-threatening, and can be fixed with home care and relaxation.

If you believe you are having a medical emergency, call emergency services right away.

Symptoms of Left Arm Pain

Left arm or shoulder pain that comes on suddenly may be a symptom of a heart attack or stroke. It can also be related to a pinched nerve, rotator cuff injury, or muscle strain. Seek medical assistance for persistent pain that can’t be resolved with pain medication.

Section 1 of 4:

Possible Causes

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    Left arm pain is a sign of a heart attack , especially in conjunction with other symptoms. If you are experiencing the symptoms of a heart attack, call emergency services right away . Symptoms of a heart attack include: [1]
    • Chest discomfort or pain
    • Discomfort in the back, neck, or lower jaw
    • Shortness of breath
    • Lightheadedness, nausea, or vomiting
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    Arm weakness, pain, or discomfort can be a sign that you are having a stroke. If you believe you are having a stroke, call emergency services right away. Symptoms of a stroke include: [2]
    • Face drooping
    • Speech difficulty
    • Confusion
    • Trouble seeing
    • Trouble walking
    • Severe headache
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    Angina happens when there is reduced blood flow to your heart. The symptoms feel very similar to a heart attack, and can include pain or squeezing in the chest, discomfort in the left arm, or burning in the chest. However, angina is typically not a medical emergency. [3]
    • Unstable angina, which is severe and can last for 20 minutes at a time, can become a medical emergency. If you have symptoms of angina for longer than 15 minutes, call emergency services.
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    An anxiety or panic attack can feel a lot like a heart attack, because many of the symptoms are the same. When something else is causing your left arm pain, anxiety can make you think that it’s a heart attack (which makes the pain feel worse, which makes you more anxious…). If you deal with anxiety or high stress levels, your pain may be a symptom or an exacerbation of your mental health. [4]
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    A pinched nerve happens when other tissue in your body presses on a nerve. You might have a pinched nerve if you’re experiencing tingling, numbness, or discomfort in your arm or shoulder. Fortunately, a pinched nerve is not serious, and symptoms will typically go away on their own. [5]
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    Your rotator cuff is the group of muscles that surround your shoulder and help your arm move. If your rotator cuff has been injured or damaged, it can cause pain and discomfort in your entire arm. There are a few types of rotator cuff injuries, including: [6]
    • Tendinitis : Inflammation or damage to the rotator cuff tendons
    • Torn rotator cuff : Muscles or tendons are damaged or torn
    • Bursitis: Inflammation or swelling or the bursa, a fluid filled sac next to the rotator cuff
    • Impingement: Shoulder bone rubbing against the rotator cuff
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    Carpal tunnel syndrome can cause numbness, tingling, or pain in your hand and forearm. This condition is caused by a pinched nerve in the hand. Over time, your pain and discomfort may become more severe. [7]
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    Overworking the muscles in your shoulders or arms can cause pain or discomfort. Think about your activity levels in the past couple of days: if you’ve been working out or exercising a lot, it’s likely that your muscles are just sore or overworked. [8]
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    If you have poor circulation, you may experience tingling, numbness, or pain in your extremities. This is because the blood is moving slowly through your veins and not reaching the entirety of your body. Other symptoms of poor circulation include: [9]
    • Pale or bluish skin
    • Cold skin
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Section 2 of 4:

When to See a Doctor

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    If you experience left arm pain suddenly and severely, you may be having a heart attack. You might also have symptoms like pressure or fullness in your chest. Call emergency services right away. [10]
    • Heart attack pain can range from sharp and severe to dull and aching.
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    If your left arm pain is due to a broken bone or a wound, you may be severely injured. Call emergency services if you can see your bone protruding or if you are bleeding profusely. [11]
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Section 3 of 4:

Diagnosis

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    Your doctor will start by examining your arm and taking your medical history. Tell your doctor about any symptoms you’ve been experiencing, and let them know if you’ve had similar pain before. [12]
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    An EKG, or an electrocardiogram, is used to measure the electrical signals from your heart. If your doctor believes you’ve had a heart attack, they may use an EKG test to see how well your heart is beating and if it has been damaged at all. [13]
    • An EKG is a painless, easy procedure. All your doctor will do is attach electrodes to your chest so they can measure the electric signals from your heart.
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    If your pain is due to an injury, your doctor may order x-rays or an MRI to take a look. These imaging tests will help your doctor pinpoint the source of the pain for better treatment. [14]
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    If your doctor believes your pain comes from an infection or a disorder, they may order blood tests to rule them out. A blood test can help diagnose where your pain is coming from and how best to treat it. [15]
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Section 4 of 4:

Treatment

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    If your left arm pain is because of an injury, your doctor will likely prescribe you pain relievers to take as needed. [16] They may also recommend anti-inflammatory medication to reduce swelling in your arm, shoulder, or hand.
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    For mild injuries, rest and relaxation will heal your arm pain in no time. Your doctor will probably recommend avoiding using the arm, applying an ice pack or a heat pack several times a day, and elevating the arm above your heart. [17]
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    If your left arm pain is due to anxiety or high stress levels, your doctor may recommend talking to a therapist . They can help get to the bottom of your anxiety and reduce your stress levels to stop the symptoms that are happening. [18]
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    If your doctor finds out that you have suffered a heart attack, they’ll talk to you about the best treatment options. Usually, they will choose between an angioplasty (inserting a tube into a blocked artery), heart valve survey (removing and replacing a damaged valve), and bypass surgery (creating a new passage for blood to flow through). [19]
    • In rare, severe cases, your doctor may recommend a heart transplant.
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      • Still not sure why your left arm is hurting? It’s always a good idea to contact your doctor and ask them if you should come in. Your doctor can let you know what your best course of action will be.
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      References

      1. ↑ https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack
      2. ↑ https://www.stroke.org/en/about-stroke/stroke-symptoms
      3. ↑ https://medlineplus.gov/angina.html
      4. ↑ https://my.clevelandclinic.org/health/diseases/15851-gerd-non-cardiac-chest-pain
      5. ↑ https://my.clevelandclinic.org/health/symptoms/21971-left-arm-numb
      6. ↑ https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/shoulder-pain
      7. ↑ https://orthoinfo.aaos.org/en/diseases--conditions/carpal-tunnel-syndrome/
      8. ↑ https://www.seattlechildrens.org/conditions/a-z/arm-pain/
      9. ↑ https://my.clevelandclinic.org/health/symptoms/21971-left-arm-numb
      1. ↑ https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack
      2. ↑ https://medlineplus.gov/ency/article/000043.htm
      3. ↑ https://www.seattlechildrens.org/conditions/a-z/arm-pain/
      4. ↑ https://medlineplus.gov/lab-tests/electrocardiogram/
      5. ↑ https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/shoulder-pain
      6. ↑ https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/shoulder-pain
      7. ↑ https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/shoulder-pain
      8. ↑ https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/shoulder-pain
      9. ↑ https://my.clevelandclinic.org/health/diseases/9536-anxiety-disorders
      10. ↑ https://www.heart.org/en/health-topics/heart-attack/treatment-of-a-heart-attack

      About This Article

      Article Summary X

      If you’re not sure if pain in your left arm is heart-related, pay attention to whether you are also feeling pain in your jaw or heaviness in your shoulders, which may be signs of a heart-related problem. You may also be experiencing nausea, dizziness, cold sweats, or shortness of breath, all of which may be signs of a heart attack. If you believe you may be experiencing a heart attack, call for emergency medical assistance immediately. If the pain in your arm only lasts for a few seconds, or if it lasts for several days, it is unlikely to be caused by a heart problem. To learn more about what the cause of your pain might be, keep reading the article!

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        May 5, 2016

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