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Henoch-Schonlein purpura on the lower legs
Henoch-Schonlein purpura on the lower legs


Henoch-Schonlein purpura on an infant's foot
Henoch-Schonlein purpura on an infant's foot


Henoch-Schonlein purpura on an infant's legs
Henoch-Schonlein purpura on an infant's legs


Henoch-Schonlein purpura on an infant's legs
Henoch-Schonlein purpura on an infant's legs


Henoch-Schonlein purpura on the legs
Henoch-Schonlein purpura on the legs


Meningococcemia on the calves
Meningococcemia on the calves


Meningococcemia on the leg
Meningococcemia on the leg


Rocky mountain spotted fever on the foot
Rocky mountain spotted fever on the foot


Meningococcemia associated purpura
Meningococcemia associated purpura


Definition:

Purpura is purple-colored spots and patches that occur on the skin, organs, and in mucus membranes, including the lining of the mouth.



Alternative Names:

Blood spots; Skin hemorrhages



Considerations:

Purpura occurs when small blood vessels under the skin leak.

When purpura spots are very small, they are called petechiae . Large purpura are called ecchymoses.

Platelets help the blood clot. A person with purpura may have normal platelet counts (nonthrombocytopenic purpuras) or decreased platelet counts (thrombocytopenic purpuras).



Common Causes:

Nonthrombocytopenic purpuras may be due to:

Thrombocytopenic purpura may be due to:



Home Care:



Call your health care provider if:

Call your doctor for an appointment if you have signs of purpura.



What to expect at your health care provider's office:

Your doctor will examine your skin and ask you questions about your medical history and symptoms, including:

  • Is this the first time you have had such spots?
  • When did they develop?
  • What color are they?
  • Do they look like bruises?
  • What medications do you take?
  • What other medical problems have you had?
  • Does anyone in your family have similar spots?
  • What other symptoms do you have?

A skin biopsy may be done.



References:

Goldman L, Ausiello D. Cecil Textbook of Medicine. 22nd ed. Philadelphia, Pa: WB Saunders; 2004:2410.

Hoffman R, Benz EJ, Shattil SS, et al. Hematology: Basic Principles and Practice. 4th ed. Orlando, Fl: Churchill Livingstone; 2005.




Review Date: 4/17/2009
Reviewed By: Michael Lehrer, MD, Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100