Which of the following condition does not cause multiple painful ulcers on tongue?
**Core Concept**
The question is testing the student's knowledge of oral mucosal conditions that present with multiple painful ulcers on the tongue. The correct answer requires an understanding of the pathophysiology and clinical presentation of various oral mucosal disorders.
**Why the Correct Answer is Right**
Pemphigus vulgaris is a chronic autoimmune disease characterized by the formation of flaccid blisters and erosions in the oral cavity, including the tongue. However, it typically presents with a single large ulcer or multiple small erosions rather than multiple painful ulcers.
**Why Each Wrong Option is Incorrect**
**Option A:** Oral lichen planus is a chronic inflammatory condition that can present with multiple painful ulcers on the tongue, making it an incorrect option.
**Option B:** Trauma to the tongue can cause multiple painful ulcers, but the question is asking for a specific condition, not a cause.
**Option C:** Contact ulcers, such as those caused by a sharp tooth or dental appliance, can present with multiple painful ulcers on the tongue.
**Clinical Pearl / High-Yield Fact**
When evaluating a patient with multiple painful ulcers on the tongue, consider the possibility of oral lichen planus or contact ulcers, and perform a thorough oral examination to identify any underlying causes.
**Correct Answer: C. Contact ulcers.**