Purpura are visible red-purple spots or patches on the skin or mucous membranes caused by bleeding from small blood vessels. This page gives general information about how purpura can appear, typical causes, and which medical specialists are commonly involved. It does not provide personalized medical advice or diagnosis.
Purpura appear as flat or slightly raised red, purple, or brownish patches that do not blanch when pressed. They can be larger than petechiae, which are pinpoint spots. Purpura may be localized after trauma or widespread when related to systemic conditions; the pattern and distribution help clinicians narrow possible causes.
Purpura can result from low platelet count or dysfunction, problems with blood vessel walls, coagulation disorders, or inflammatory and infectious processes. Depending on the suspected mechanism, care is often provided by Hematology, Dermatology, Infectious Diseases, Primary Care/Family Medicine, or Pediatrics for children. The choice of specialist depends on accompanying symptoms and initial clinical findings.
Most isolated, small areas of purpura are not emergencies. Seek immediate medical care or call emergency services if purpura is rapidly spreading, occurs with heavy bleeding, signs of internal bleeding, severe dizziness, shortness of breath, altered consciousness, or high fever. These signs may indicate a serious bleeding disorder or systemic illness requiring prompt evaluation.
Clinicians begin with a medical history and physical exam to assess the pattern of skin findings and any associated symptoms. Initial tests may include a complete blood count with platelet count and basic coagulation studies; further tests are guided by clinical context. Management and follow-up depend on the identified cause and are coordinated by the treating specialist.
Note new or changing skin spots and report them to a clinician. Reduce activities that may cause skin trauma if bleeding tendency is suspected, and follow any recommendations from your healthcare provider. If you are taking medications that affect bleeding, discuss monitoring and precautions with the prescribing clinician.
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