A pulmonary embolism (PE) occurs when a foreign substance blocks an artery in your lungs, stopping blood flow. It’s usually caused by a blood clot, but can sometimes be due to lipid, air, or tumor ...

When most of us think of a serious medical emergency, we usually think of sudden events such as heart attacks, strokes or serious injuries from a car crash. But some threats develop quietly, with ...

Medically reviewed by Cara Beth Lee, MD There are many different causes of calf pain. It may be directly related to your calf muscles—including the inner gastrocnemius and outer soleus muscles—or the ...