Question

A young girl presented to the OPD with rough surfaced lesions over her elbows and knees. She also complained of diminished vision in the night. What is the most likely diagnosis?

• A. Keratosis pilaris
• B. Phrynoderma
• C. Folliculitis
• D. Pyoderma

Answer 1

The Correct Option is B

To diagnose the condition presented in the question, let's analyze the symptoms and their associations:

• The young girl has rough surfaced lesions over her elbows and knees.
• She experiences diminished vision in the night.

The rough lesions, particularly on extensor surfaces like elbows and knees, suggest a keratotic condition. Additionally, the symptom of night blindness commonly points towards a deficiency in vitamin A.
Given these symptoms, the most likely diagnosis is Phrynoderma.
Phrynoderma, also known as follicular hyperkeratosis, is linked to a deficiency of essential nutrients, particularly a lack of vitamin A, which also explains the night blindness symptom. Let's compare the other options to clarify why they don't fit:

Condition	Feature	Reason Not Likely
Keratosis pilaris	Keratin plugs in hair follicles	Does not cause night blindness
Folliculitis	Inflammation of hair follicles	Lacks systemic symptoms like vision issues
Pyoderma	Pus forming skin infections	No vision problems or vitamin deficiency link

Based on the symptoms and a process of elimination, Phrynoderma is the most consistent diagnosis.