They share similar symptoms, sure. But these three distinct conditions have distinct causes, occur in people of varying ages and have their own treatments. Read on for the key differences.

An avid runner. A fireman. A college student. What they share in common may surprise you—and the battle to get their lives back after debilitating diagnoses will inspire you.

Your immune system does so much more than simply fight off colds. For National Autoimmune Disease Awareness Month, we spoke to scientists who are harnessing this vital defense system to fight diseases in ways you likely never imagined.

In just three years, HealtheVoices has had a big impact on the online health advocate and patient blogger community. Here’s how it came to be—and where it’s headed.