Wernicke’s korsakoff’s syndrome is characterized by all except
**Core Concept**
Wernicke's Korsakoff syndrome is a neurological disorder caused by thiamine deficiency, commonly seen in chronic alcoholics. It involves a complex interplay between thiamine-dependent enzymes and the brain's neurotransmitter systems.
**Why the Correct Answer is Right**
The syndrome is characterized by two distinct clinical entities: Wernicke's encephalopathy and Korsakoff's psychosis. Wernicke's encephalopathy presents with symptoms of ophthalmoplegia, ataxia, and confusion, whereas Korsakoff's psychosis is marked by anterograde and retrograde amnesia, confabulation, and difficulties with learning new information. The pathophysiology involves impaired glucose metabolism in the brain, leading to neuronal damage and death.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Wernicke's Korsakoff syndrome is indeed characterized by ataxia, which is a symptom of Wernicke's encephalopathy.
**Option B:** This option is incorrect because ophthalmoplegia is a hallmark symptom of Wernicke's encephalopathy, a component of the syndrome.
**Option C:** This option is incorrect because confabulation is a characteristic feature of Korsakoff's psychosis, a part of the Wernicke's Korsakoff syndrome.
**Clinical Pearl / High-Yield Fact**
Early recognition and treatment of Wernicke's Korsakoff syndrome with thiamine supplementation are crucial to prevent long-term cognitive impairment and mortality.
**Correct Answer: D.**