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Living with Thrombotic thrombocytopenic purpura

A rare condition in which clots form in small blood vessels and use up platelets, which can affect the brain and kidneys.

Understanding Thrombotic thrombocytopenic purpura

Thrombotic thrombocytopenic purpura is a rare disorder that causes blood clots in small blood vessels throughout the body.

The clots can block blood flow to organs such as the brain, kidneys, and heart. Platelets get used up, so levels drop, and red blood cells break apart (hemolytic anemia). There is an acquired form, which usually appears in late childhood or adulthood, and a familial (inherited) form. It can appear at any time in life.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Low platelet count (thrombocytopenia)
  • Headache and confusion
  • Seizures or stroke
  • Belly pain or diarrhea
  • Hemolytic anemia: tiredness and paleness
  • Trouble breathing

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists and kidney specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Kidney specialists (nephrologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Kidney Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Is my condition the acquired or the inherited form?
Which blood tests will track my platelets and red blood cells?
Which symptoms mean I should seek care right away?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Recessive

GARD says the inherited form is autosomal recessive, so a child inherits a changed copy of a gene from each parent. The acquired form is not inherited. The record doesn't name a gene.

KidneyBlood

Also known as: moschcowitz disease; moschcowitz syndrome; moschcowitz's syndrome; moschkowitz disease; moschowitz disease; moschowitz syndrome

Patient organizations

Source: NIH GARD · Thrombotic thrombocytopenic purpuraGARD ID 16659 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Thrombotic thrombocytopenic purpura.

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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