Abdominal pain

Find out what causes different types of abdominal pain.


Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.


Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Rectal bleeding

Jan. 05, 2018
  1. Plague. Centers for Disease Control and Prevention. Accessed Dec. 28, 2015.
  2. Centers for Disease Control and Prevention, et al. Human plague — United States, 2015. MMWR. 2015;64:918. Accessed Dec. 28, 2015.
  3. Longo DL, et al., eds. Plague and other Yersinia infections. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. Accessed Dec. 28, 2015.
  4. Plague and other Yersinia infections. Merck Manual Professional Version. Accessed Dec. 28, 2015.