Typhoid fever is a serious infection caused by the bacterium Salmonella enterica serotype Typhi (S. Typhi). Enteric fever ...

Legionnaires’ disease is a severe pneumonia caused by contaminated water systems. Understanding its symptoms, causes, and ...

Crohn's disease is a chronic inflammatory bowel condition often missed early. Experts explain its causes, symptoms, diagnosis ...

Tired all the time? It might be in your DNA. A new study has uncovered striking genetic differences in people suffering from a devastating illness that causes extreme exhaustion, chronic pain and ...

Fatigue can stem from a variety of illnesses and life stressors, but when that exhaustion lasts for months it may indicate a condition called chronic fatigue syndrome.

Hantaviruses are spread by rodents and can cause deadly respiratory and kidney illnesses in humans. One of these illnesses recently killed Betsy Arakawa, actor Gene Hackman's wife, in a widely covered ...