Idiopathic Thrombocytopenic Purpura (ITP) - Causes

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What Are The causes of Idiopathic Thrombocytopenic Purpura (ITP)?

In most cases, it's believed that an autoimmune response causes idiopathic thrombocytopenic purpura (ITP).

Normally, the immune system makes antibodies (proteins) to fight off germs or other harmful things that enter the body. In ITP, however, the immune system attacks and destroys the body's platelets by mistake. Why this happens isn't known.

Children who get acute (short-term) ITP often have had recent viral infections. It's possible that the infection somehow "triggers" or sets off the immune reaction that leads to ITP in these children. ITP in adults, on the other hand, doesn't seem to be linked to infections.

Return to Idiopathic Thrombocytopenic Purpura (ITP)

See what others are saying

Comment from: Mom2three, 3-6 Female (Caregiver) Published: October 31

Our four year old daughter had chicken pox about 3 weeks before being diagnosed with ITP. At first doctors thought she might have leukemia and did a spinal tap in 1985 which was very scary.

Was this comment helpful?Yes
Comment from: Terrified Mother, 0-2 Female (Caregiver) Published: March 18

My daughter was just diagnosed with ITP and the hematologist said that it was because of the flu vaccine.

Was this comment helpful?Yes


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