A urinary tract infection (UTI) is an infection in any part of the urinary system. The urinary system includes the kidneys, ureters,...

Esophagitis (uh-sof-uh-JIE-tis) is inflammation of the esophagus. The esophagus is the muscular tube that delivers food from your mouth...

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads,...