In a case of dermatitis with violaceous, flat-topped papules, what clinical feature is most likely to be present?

In cases of dermatitis characterized by violaceous, flat-topped papules, the clinical presentation is highly suggestive of Lichen Planus. One notable feature of Lichen Planus is the possibility of involvement of the buccal mucosa, which can present as white reticular striae known as Wickham's striae, or even as erosive lesions. This occurs due to the immune-mediated nature of the condition, which affects not only the skin but also mucosal surfaces.

The significance of buccal mucosa involvement lies in the fact that it can help differentiate Lichen Planus from other dermatological conditions. The presence of these lesions may also indicate a systemic manifestation of the disease, making the recognition of this feature clinically important.

Other options present features that are not typical for this condition. For example, asymmetric oligoarthritis might be associated with reactive arthritis or other conditions but does not relate to Lichen Planus. Burrows in finger webs are indicative of scabies, and conjunctival scarring is characteristic of other conditions such as Stevens-Johnson syndrome or pemphigoid rather than Lichen Planus. Thus, the involvement of the buccal mucosa is the most relevant feature in the context of dermatitis with viol