A pinkish red Flurorescence of urine with wood’s Lamp is seen in
**Core Concept**
The question is testing the student's knowledge of porphyrins and their clinical manifestations, specifically the diagnostic use of Wood's lamp in detecting certain disorders. **Porphyrins** are crucial in the biosynthesis of **heme**, and their disorders can lead to unique clinical presentations.
**Why the Correct Answer is Right**
The correct answer is related to **porphyria**, a group of disorders that result from defects in the biosynthetic pathway of **heme**. One of these disorders, **porphyria cutanea tarda** or other acute porphyrias, can lead to the accumulation of **porphyrins** in the urine, which fluoresces under Wood's lamp due to its excitation by ultraviolet light. This fluorescence is typically pinkish-red.
**Why Each Wrong Option is Incorrect**
**Option A:** This option would be incorrect because it does not directly relate to the condition characterized by pinkish-red fluorescence under Wood's lamp.
**Option B:** Similarly, this option is not associated with the specific fluorescence pattern mentioned.
**Option C:** This option is also incorrect as it does not correspond to the clinical presentation described.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **Wood's lamp** is a diagnostic tool used to detect several conditions, including **porphyrias**, due to its ability to excite fluorescent molecules, leading to characteristic colors under ultraviolet light.
**Correct Answer:** D. Porphyria