**Question:** Neurocysticercosis, following are true except:

A. Neurocysticercosis is a parasitic infection caused by the larval form of the pork tapeworm, Taenia solium.
B. The larvae can invade and multiply in the central nervous system, causing inflammation and tissue damage.
C. The infection is primarily found in endemic regions of the world, such as parts of Asia, Africa, and South America.
D. The infection can be diagnosed using a single blood test, making it a foolproof diagnosis.

**Correct Answer:** D. The infection can be diagnosed using a single blood test, making it a foolproof diagnosis.

**Core Concept:** Neurocysticercosis is a parasitic infection caused by the larval form of the pork tapeworm, Taenia solium. The larvae can invade the central nervous system, causing inflammation and tissue damage, which leads to neurological symptoms. The infection is primarily found in endemic regions of the world, such as parts of Asia, Africa, and South America.

**Why the Correct Answer is Right:** Neurocysticercosis cannot be diagnosed using a single blood test. The diagnosis requires a combination of clinical history, radiological findings, and serological tests. Blood tests can help confirm the infection, but they are not foolproof because they may not be specific enough, especially in the early stages of the disease.

**Why Each Wrong Option is Incorrect:**

A. Neurocysticercosis is indeed a parasitic infection, but the diagnosis is not solely based on blood tests. Clinical history, radiological findings, and serological tests play crucial roles in diagnosis.

B. While the larvae can invade the central nervous system, the infection's diagnosis cannot be made based on this fact alone.

C. Although endemic regions are known, the diagnosis cannot be made based on the infection's geographic location alone.

**Clinical Pearl:** To diagnose neurocysticercosis, a comprehensive approach is essential, involving clinical history, radiological findings, and serological tests. This ensures an accurate diagnosis and proper management of the infection.