All of the following are true about Kemicterus EXCEPT:
**Core Concept**
Kemicterus, also known as subdural hematoma, is a collection of blood between the dura mater and the arachnoid mater, which are layers of the meninges surrounding the brain. This condition often results from head trauma, leading to bleeding and subsequent accumulation of blood.
**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of Kemicterus, which involves the accumulation of blood between the dura mater and the arachnoid mater. This is due to the tearing of bridging veins, which are vessels connecting the cortical surface of the brain to the dural sinuses. The blood accumulates in the space between the dura mater and the arachnoid mater, leading to increased intracranial pressure and potentially life-threatening complications.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a characteristic of Kemicterus, not an exception. Kemicterus often presents with a lucid interval, where the patient experiences a brief period of normalcy before worsening.
**Option B:** This option is incorrect because it is also a true statement about Kemicterus. Kemicterus typically occurs in the elderly or in patients with underlying medical conditions, such as bleeding disorders or anticoagulation.
**Option C:** This option is incorrect because it is a common complication of Kemicterus. Increased intracranial pressure can lead to herniation of the brain, which can be fatal if not treated promptly.
**Clinical Pearl / High-Yield Fact**
A key aspect to remember is that Kemicterus often presents with a non-focal neurological examination in the early stages, making it challenging to diagnose. However, as the condition worsens, focal signs and symptoms may develop, such as hemiparesis or aphasia.
**Correct Answer: D.**