Strawberry tongue is seen in:
**Core Concept**
Strawberry tongue is a clinical sign characterized by an enlarged, red, and bumpy appearance of the tongue, often seen in certain medical conditions. This symptom is usually associated with an underlying inflammatory or allergic reaction affecting the mucous membranes.
**Why the Correct Answer is Right**
The correct answer is associated with Kawasaki disease, a rare condition that predominantly affects children, causing inflammation in the blood vessels throughout the body. Strawberry tongue is one of the characteristic signs of Kawasaki disease, which also includes fever, rash, swelling of the hands and feet, and lymphadenopathy. The exact cause of strawberry tongue in Kawasaki disease is not well understood, but it is thought to be related to the activation of various inflammatory cytokines and the release of histamine, leading to increased blood flow and swelling in the tongue.
**Why Each Wrong Option is Incorrect**
**Option A:** While oral thrush (candidiasis) can cause changes in the oral mucosa, it is typically characterized by white patches rather than a red, bumpy appearance.
**Option B:** Hand, foot, and mouth disease is a viral illness that primarily affects children, causing a distinctive rash and mouth sores, but it is not typically associated with strawberry tongue.
**Option C:** Stevens-Johnson syndrome is a severe skin and mucous membrane disorder that can cause blistering and sloughing of the skin and mucous membranes, but it is not typically characterized by strawberry tongue.
**Clinical Pearl / High-Yield Fact**
Strawberry tongue is a classic sign of Kawasaki disease, but it can also be seen in other conditions, such as scarlet fever, pemphigus vulgaris, and certain allergic reactions.
**Correct Answer:** D. Kawasaki disease.