Free

E-newsletter

Subscribe to Housecall

Our weekly general interest
e-newsletter keeps you up to date on a wide variety of health topics.

Sign up now

Definition

By Mayo Clinic staff

CLICK TO ENLARGE

Photograph of petechiae on leg and abdomen Petechiae

Petechiae (pronounced puh-TEE-kee-ee) are pinpoint, round spots that appear on the skin as a result of bleeding under the skin. The bleeding causes the petechiae to appear red, brown or purple. Petechiae commonly appear in clusters and may look like a rash. Usually flat to the touch, petechiae don't lose color when you press on them.

Petechiae are tiny, usually measuring less than an eighth of an inch (about 3 millimeters). Larger varieties of these types of spots are called purpura. Petechiae may indicate a number of conditions, ranging from minor blood vessel injuries to life-threatening medical conditions.

Causes
References
  1. Paulman PM, et al. Taylor's 10-minute Diagnosis Manual: Symptoms and Signs in the Time-Limited Encounter. 2nd ed. Philadelphia, Pa.: Lippincott Williams & Wilkins; 2007:343.
  2. Mandell GL, et al. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2010. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-06839-3..X0001-X--TOP&isbn=978-0-443-06839-3&uniqId=230100505-57. Accessed Feb. 20, 2012.
  3. Goldman L, et al. Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/191371208-2/0/1492/0.html#. Accessed Feb. 20, 2012.
  4. Hoffman R, et al. Hematology: Basic Principles and Practice. 5th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2009. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-06715-0..X5001-8--TOP&isbn=978-0-443-06715-0&uniqId=230100505-56. Accessed Feb. 20, 2012.
  5. Anderson CF (expert opinion). Mayo Clinic, Rochester, Minn. Feb. 22, 2012.
MY01104 May 5, 2012

© 1998-2013 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.com," "EmbodyHealth," "Enhance your life," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research.

  • Print

  • Share on:

  • Email

Advertisement


Text Size: smaller largerlarger