If you've ever had an allergic reaction that includes hives-a rash with itchy, raised bumps or welts-then you know how uncomfortable they are. In addition to the intense, sometimes uncontrollable ...

This informational guide, part of PS's Condition Center, lays out the realities of this health concern: what it is, what it can look like, and strategies that medical experts say are proven to help.

Spontaneous coronary artery dissection (SCAD) is a nonatherosclerotic, nontraumatic separation of the coronary arterial walls and causes acute coronary syndrome and sudden cardiac death. Image Credit: ...