**Core Concept**
Idiopathic thrombocytopenic purpura (ITP) is an autoimmune disease characterized by the production of autoantibodies against platelet surface antigens, leading to platelet destruction and subsequent thrombocytopenia. This results in an increased risk of bleeding and hemorrhage.
**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of ITP. In ITP, autoantibodies bind to platelet surface antigens, marking them for destruction by the immune system. This process involves the activation of complement and the phagocytosis of platelets by macrophages in the spleen. The correct answer reflects a phenomenon not typically associated with this process.
**Why Each Wrong Option is Incorrect**
**Option A:** This option might be tempting, but it is not generally seen in ITP. However, it is not the correct answer in this case.
**Option B:** This option is incorrect because it is a characteristic feature of ITP.
**Option C:** This option is incorrect because it is a hallmark of ITP.
**Option D:** This option is incorrect because it is a common finding in ITP patients.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that ITP is a diagnosis of exclusion, and other causes of thrombocytopenia should be ruled out before making the diagnosis. This includes infections, malignancies, and drug-induced thrombocytopenia.
**Correct Answer: D.**
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