Menu Close

encyclopedia

Head Injuries

Also called: Cranial injuries, Skull fractures, Skull injuries Chances are you’ve bumped your head before. Usually, the injury is minor because your skull is hard……

Headache

Headache is the most common form of pain. It’s a major reason people miss days at work or school or visit the doctor. The most……

Heart Attack

Each year over a million people in the U.S. have a heart attack. About half of them die. Many people have permanent heart damage or……

Heart Diseases

If you’re like most people, you think that heart disease is a problem for others. But heart disease is the number one killer in the……

Heartburn

Heartburn is a painful burning feeling in your chest or throat. It happens when stomach acid backs up into your esophagus, the tube that carries……

Herbal Medicine

An herb is a plant or plant part used for its scent, flavor, or therapeutic properties. Herbal medicines are one type of dietary supplement. They……

Herniated Disk

Also called: Bulging disk, Compressed disk, Herniated intervertebral disk, Herniated nucleus pulposus, Prolapsed disk, Ruptured disk, Slipped disk  Your backbone, or spine, is made up……

Heroin

Heroin is a white or brown powder or a black, sticky goo. It’s made from morphine, a natural substance in the seedpod of the Asian……