Someone experiencing shortness of breath might be experiencing acute anxiety or a symptom of a heart condition. Know the difference.

An asthma attack can come on suddenly or as a gradual worsening of symptoms. Here are the key signs you may be experiencing ...

Double pneumonia can be more severe than one-sided pneumonia depending on how much lung tissue is affected by the infection.

Ms. Arakawa, the wife of the actor Gene Hackman, died from the effects of a disease often caused by contact with droppings ...

Massachusetts health officials are investigating one case of healthcare-associated Legionnaires' disease involving a patient at a Boston-area hospital.