What should I do if I am having chest pain on the left side?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Left-side chest pain can range from harmless muscle strain to a medical emergency. Seek immediate care if the pain is severe, crushing, or accompanied by shortness of breath, sweating, nausea, dizziness, or pain radiating to the arm, jaw, or back — these may signal a heart attack. Milder causes can include acid reflux, anxiety, costochondritis, or muscle injury, but only a proper evaluation can confirm the source.

Because chest pain has so many possible causes, the smartest next step is understanding your specific symptoms before deciding what to do. Take a free, instant, AI-powered symptom check to get personalized insights, identify possible conditions, and know exactly when and where to seek care — in just a few minutes.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn what your left chest pain could mean Discover if left-sided chest pain needs care See likely causes of your chest pain Find OTC relief options for chest pain Find a doctor for chest pain evaluation Understand safe home remedies for chest pain Find out if chest pain is serious

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Explanation

When you experience chest pain on the left side, it is important to take your symptoms seriously. First, pay close attention to your pain. If you feel the pain is very severe, if it lasts more than a few minutes, or if it comes with other signs such as shortness of breath, pain that spreads to your arm or jaw, sweating, or if you feel very weak or dizzy, call 911 or your local emergency services right away. These signs can be symptoms of a heart attack, which is an emergency. If the pain is mild and you are not experiencing any of these concerning symptoms, you can use a free symptom checker to help understand your symptoms before contacting a doctor. Your doctor may ask about your pain, how long it has been happening, and if there are any other symptoms. They might run tests like an EKG or blood tests to find out what is causing your chest pain. Remember, it is important to have your symptoms checked so you can get the right care and feel better safely.

(References)

Updated 2022 Dec 14]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK470557/
Fox KF. Investigation and management of chest pain. Heart. 2005 Jan;91(1):105-10. doi: 10.1136/hrt.2003.031062. PMID: 15604354; PMCID: PMC1768663.
Malik MA, Alam Khan S, Safdar S, Taseer IU. Chest Pain as a presenting complaint in patients with acute myocardial infarction (AMI). Pak J Med Sci. 2013 Apr;29(2):565-8. doi: 10.12669/pjms.292.2921. PMID: 24353577; PMCID: PMC3809224.

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