9. Angina
People who are experiencing the onset of angina, often describe a pressure or squeezing in the left arm, accompanied by sensations of heaviness and tightness in the chest. Some patients with the condition described as a vice clamping down on their heart. Unfortunately, angina is hard to distinguish between other sources of chest pain, and the patient requires a diagnosis by a medical professional to confirm the condition.
If you start to experience any tightness in the chest, or a sensation like someone is sitting on top of you while you lie in bed, have someone drive you to the emergency room. Angina can be a life-threatening condition if not treated immediately. In some cases, angina may progress to myocardial infarction, also known as a heart attack.
Angina is not always life-threatening, and it may be a sign of other conditions such as sensitivity to caffeine or other nervous system stimulants, like nicotine.