Which symptom is characteristic of Lichen Planus?

Lichen Planus is a chronic inflammatory condition that primarily affects the skin and mucous membranes, with a notable presentation in the oral cavity. The key characteristic associated with oral Lichen Planus is the presence of white striations on the buccal mucosa, often referred to as "Wickham's striae." These striations are usually seen in a lacy or reticular pattern and are indicative of the condition's unique histopathological features.

The characteristic appearance of white striations helps differentiate Lichen Planus from other oral conditions. While changes in the oral mucosa can occur due to various reasons, the specific pattern of white striations is strongly tied to this diagnosis. This symptom aligns with the underlying pathophysiology of Lichen Planus, such as the immune-mediated attack on epithelial cells leading to alterations in oral mucosal appearance.

In contrast, other symptoms or signs presented in the choices do not align with the common presentations of Lichen Planus. Advanced decay refers to dental caries and is unrelated to this condition. Increased salivation does not typically occur with Lichen Planus and is associated with other oral health issues. Colorful papules on the tongue are not characteristic of Lichen Plan