A patient has small, oval multiple ulcers in oral cavity with red erythematous margins. The diagnosis is ?
**Core Concept**
The patient's symptoms suggest an oral mucosal condition characterized by the presence of multiple small, oval ulcers with erythematous margins. This condition is a type of mucosal lesion that can be caused by various factors, including infections, autoimmune disorders, or trauma.
**Why the Correct Answer is Right**
The description provided is consistent with Oral Lichen Planus (OLP), a chronic inflammatory condition affecting the mucous membranes inside the mouth. OLP is characterized by the presence of white, lacy patches or red, swollen tissues (erythema). The lesions can be painful and may bleed easily. The exact cause of OLP is unknown, but it is believed to result from an autoimmune response, with genetic predisposition playing a role.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not describe the characteristic lesions of OLP. Oral candidiasis typically presents as white patches or plaques, often with a cottage cheese-like appearance.
**Option B:** This option is incorrect because it does not accurately describe the appearance of OLP lesions. Aphthous ulcers are typically solitary, round or oval, and have a yellowish or grayish center.
**Option C:** This option is incorrect because it does not match the description of OLP. Erythema multiforme is a condition characterized by target lesions on the skin and mucous membranes, often in response to a viral or bacterial infection.
**Clinical Pearl / High-Yield Fact**
A key feature of OLP is its association with other autoimmune conditions, such as lichen planus on the skin, hepatitis C, and Sjögren's syndrome. This makes it essential to consider OLP in the differential diagnosis of patients presenting with oral mucosal lesions.
**Correct Answer:** C.