**Core Concept**
Cerebral malaria is a severe complication of Plasmodium falciparum infection, characterized by impaired consciousness, seizures, and coma. It is caused by the sequestration of infected erythrocytes in the cerebral microvasculature, leading to ischemia and inflammation.
**Why the Correct Answer is Right**
Plasmodium falciparum has a unique ability to sequester in the cerebral microvasculature, where it adheres to the endothelial cells and platelets, forming rosettes. This sequestration leads to the obstruction of blood flow and oxygen delivery to the brain, resulting in cerebral malaria. The parasite's ability to sequester is mediated by the binding of PfEMP1 (Plasmodium falciparum erythrocyte membrane protein 1) to the endothelial cells and platelets.
**Why Each Wrong Option is Incorrect**
* **Option A:** Plasmodium vivax is not typically associated with cerebral malaria, as it tends to cause milder symptoms.
* **Option B:** Plasmodium ovale is another non-falciparum species that is not commonly linked to cerebral malaria.
* **Option D:** Plasmodium malariae can cause chronic or subacute infections, but it is not typically associated with cerebral malaria.
**Clinical Pearl / High-Yield Fact**
It is essential to note that cerebral malaria is a medical emergency that requires prompt recognition and treatment. The presence of coma, seizures, or impaired consciousness in a patient with suspected malaria should raise suspicion for cerebral malaria.
**Correct Answer: C. Plasmodium falciparum.**
Free Medical MCQs Β· NEET PG Β· USMLE Β· AIIMS
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