Left arm pain doesn’t always mean you’re having a heart attack. Here’s what makes it more concerning.

Published: June 17, 2026

Estimated reading time: 3 minutes

Many people experience left arm pain from muscle strain, shoulder issues, arthritis, pinched nerves, or other conditions not related to the heart. But arm discomfort also can be part of a heart attack — especially when it appears with chest pressure, shortness of breath, nausea, sweating, jaw or back pain, or a sudden sense that something is seriously wrong.

What left arm pain may feel like during a heart attack

People often expect “crushing chest pain,” but heart attack symptoms can vary.

In some men, discomfort may start in the chest or shoulder and radiate down the left arm or toward the jaw.

Women are more likely than men to have subtler symptoms, including pain in either arm, shoulder blades, upper back, jaw or abdomen; as well as nausea or unusual fatigue. Chest discomfort remains common in women, but it may be intermittent or less dramatic than people expect.

Other symptoms that make left arm pain more concerning

• Chest pressure, squeezing, fullness or pain
• Shortness of breath
• Nausea or vomiting
• Cold sweat
• Lightheadedness or fainting
• Jaw, neck, shoulder or upper-back pain
• Sudden unexplained fatigue (more common in women)

“We worry less about isolated arm soreness after lifting boxes than arm discomfort that arrives with chest pressure, shortness of breath, sweating, nausea, or jaw and back pain,” said Kent E. Morris, M.D., MBA, electrophysiologist and medical director of Norton Heart & Vascular Institute. “Those combinations deserve emergency evaluation, because minutes matter when heart muscle is at risk.”

Call 911 if you have:

• Chest pressure, squeezing, heaviness, or pain lasting more than a few minutes, or that comes and goes
• Arm pain or discomfort that occurs with chest symptoms, shortness of breath, nausea/vomiting, sweating, dizziness, jaw pain or back pain
• Sudden severe symptoms, fainting, or extreme weakness
• Arm weakness or inability to raise both arms evenly (possible stroke — treat as an emergency)

Arrange prompt medical evaluation if you have new, unexplained arm pain that is persistent, worsening, recurring with exertion or occurring at rest, especially if you have risk factors such as high blood pressure, diabetes, high cholesterol, smoking history, obesity, prior heart disease or a strong family history of early heart disease.