Heroin is a highly addictive drug made from morphine. It can be injected, snorted, or smoked. Learn about withdrawal symptoms and addiction treatment. READ MORE
A herniated or slipped disc means that one of the soft cushions or discs between your vertebrae or spinal bones pushes out. Find out about it here. READ MORE
Hernias can happen to anyone. They're caused by a combination of muscle weakness and strain. Learn about several types and therapies available. READ MORE
Hepatitis C (HCV) is virus that causes liver inflammation. It usually spreads through contact with blood from someone who has HCV. It can be acute or chronic. READ MORE
Hepatitis B virus is a contagious liver infection spread from person-to-person via blood or body fluids. Who is at risk for HBV? Read about it here. READ MORE
Hepatitis A virus can infect people who accidentally ingest fecal matter in contaminated food or water or through personal contact. More on HAV here. READ MORE
The word "hepatitis" means inflammation of the liver. There are five main hepatitis viruses (A, B, C, D or E). Learn about the different types here. READ MORE
Hemorrhagic stroke happens when a blood vessel breaks and bleeds into the brain. Learn about the symptoms and genetics behind hemorrhagic stroke. READ MORE
Viral hemorrhagic fevers are a group of illnesses caused by four families of viruses including Ebola and Marburg, Lassa fever, and yellow fever. READ MORE
Hemophilia is a rare disorder in which the blood does not clot normally. Usually hemophilia usually occurs in males and is inherited. Learn more. READ MORE