A 12 years old girl with tremors and emotional liability has golden brown discolouration in Descement’s membrane. The most likely diagnosis is?
**Core Concept**
The question is testing the knowledge of a specific condition characterized by **neurological symptoms** and **ocular findings**, particularly the presence of **Kayser-Fleischer rings**, which are golden brown discolouration in Descemet's membrane of the cornea.
**Why the Correct Answer is Right**
The correct diagnosis is likely **Wilson's disease**, an inherited disorder of **copper metabolism**. The condition leads to an accumulation of copper in various tissues, including the brain and liver, causing symptoms such as tremors, emotional liability, and liver disease. The presence of Kayser-Fleischer rings is a hallmark of Wilson's disease, resulting from copper deposition in Descemet's membrane.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not match the description of Wilson's disease.
**Option B:** This option is incorrect because it does not correlate with the symptoms and signs described.
**Option C:** This option is incorrect because it is not associated with Kayser-Fleischer rings.
**Option D:** This option is incorrect because it does not fit the clinical presentation.
**Clinical Pearl / High-Yield Fact**
Wilson's disease is a rare but important condition to recognize, as it is treatable with **chelating agents** and **zinc supplementation**. Early diagnosis is crucial to prevent long-term complications, such as liver cirrhosis and neurological damage.
**Correct Answer:** D. Wilson's disease.