Atrial tachycardia is an abnormal heart rhythm that can be dangerous if it lasts long enough. It causes the upper...

Ventricular tachycardia symptoms include rapid, irregular heartbeats that last for more than 30 seconds and cause breathing problems. Sustained ventricular...

Symptoms of rocky mountain spotted fever are nonspecific and include a sudden onset of fever, headache, muscle pain and a...

Endemic typhus, sometimes called fleaborne typhus or murine typhus, is a less severe form of the disease epidemic typhus (louseborne...

Typhoid fever symptoms include a high fever, stomach pain and diarrhea. These symptoms can get worse if you don't get...