On a December morning in 2013, this Metro-North train headed towards New York City derailed in the Bronx, killing four passengers and injuring 115. The driver was later found to have severe sleep apnea. This wasnât the first incident involving trains or the last. Learn more.
Arm pain can be caused by a wide variety of problems, ranging from joint injuries to compressed nerves. Depending on the cause, arm pain can start suddenly or develop over time. In many cases, arm pain actually originates from a problem in your neck or upper spine. Arm pain, particularly pain that radiates into your left arm, can even be a sign of a heart attack. Causes.
How to Know if Left Arm Pain Is Heart Related. Three Parts: Recognizing a Heart Attack Evaluating Your Pain Considering Non-Heart Related Causes Community Q&A. Pain in the left arm can be due to many conditions, ranging from run of the mill muscle pain to a severe heart attack. Abnormalities of the skin, soft tissue, nerves, bones, joints and blood vessels of the arm can all cause pain. There are...