All the following are features of Pseudotumor cerebri except:
**Pseudotumor Cerebri**
**Core Concept**
Pseudotumor cerebri, also known as idiopathic intracranial hypertension (IIH), is a condition characterized by increased intracranial pressure without any identifiable cause, such as mass lesions, tumors, or vascular malformations. This condition is often associated with obesity, female sex, and young adulthood.
**Why the Correct Answer is Right**
Pseudotumor cerebri is characterized by the presence of papilledema, which is the swelling of the optic disc due to increased intracranial pressure. This condition can also be associated with visual disturbances, such as transient visual obscurations, and tinnitus. Additionally, patients with pseudotumor cerebri often have normal cerebrospinal fluid (CSF) composition and pressure, without any signs of infection or inflammation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a feature of pseudotumor cerebri, as it is not a common symptom of the condition. However, headache is a common complaint in patients with pseudotumor cerebri.
* **Option A** is not a specific feature of pseudotumor cerebri, but rather a nonspecific symptom that can occur in various conditions.
**Option B:** This option is a feature of pseudotumor cerebri, as it is a characteristic symptom of the condition.
* **Option B** is correct, but we are looking for an exception.
**Option C:** This option is a feature of pseudotumor cerebri, as it is a common finding in patients with the condition.
* **Option C** is correct, but again, we are looking for an exception.
**Option D:** This option is a feature of pseudotumor cerebri, as it is a characteristic symptom of the condition.
* **Option D** is correct, but we are looking for an exception.
**Clinical Pearl / High-Yield Fact**
A key feature of pseudotumor cerebri is the absence of focal neurological deficits, despite the presence of increased intracranial pressure. This is in contrast to conditions such as stroke or brain tumors, where focal neurological deficits are common.
**Correct Answer: D. Normal CSF composition and pressure.**