Viral diseases are caused by viruses, which are particles with a core of genetic material, either DNA or RNA, and...

Motor neuron diseases are disorders that cause the destruction of the nerve cells that control muscle movement. They include ALS,...

The muscle walls of your arteries contract and expand regularly to help control blood flow. But in vasospasm, the muscles...

Dressler disease develops 2 to 10 weeks after a myocardial infarction and causes pericardial and pleural effusion. These effusions are...

Decompressions Sickness occurs when the body is exposed to a rapid decrease in ambient pressure. It can occur in scuba...

Children with Hirschsprung Disease often experience problems like diarrhea and a hard time emptying their bowels. But they can live...

People over 50 years old who smoke or drink heavily are at higher risk for getting Legionnaire's Disease. So are...

Wilson disease is hard to diagnose because symptoms often look like other illnesses, such as hepatitis or changes in mental...

Waldenstrom macroglobulinemia develops in the bone marrow, the spongy center of most bones. It may also affect the liver, lymph...

The disorder is caused by changes in the HEXA gene. A child must inherit two copies of the gene, one...