In some cases, left arm pain is one sign of a heart attack (myocardial infarction), which is a medical emergency. This article discusses some of ...

Injury. Left arm pain can be caused by an injury such as a bone fracture, bruise, or tendonitis.. A broken bone can cause significant pain, swelling, and bruising and may produce a noticeably out ...

Breaking out in a cold sweat without physical exertion or heat is a warning sign that many people overlook. During a heart ...

With heart problems, it’s typically left arm pain, Gravallese says. “It could also be neck pain, back pain and a number of other things as well,” she says.

Cincinnati Reds left field rookie Tyler Callihan suffered a broken left forearm during the team's 4-0 road loss the Atlanta Braves on Monday, per ESPN.

Left arm pain can happen after an injury or pinched nerve. But in some cases, it could be an early indicator of a heart problem. Here’s what you need to know.