Which systemic condition can cause oral ulcers?

Lichen planus is an inflammatory condition that can affect the mucous membranes, including the oral cavity, leading to the development of painful ulcers. It is characterized by oral lesions that can appear as white, lacy patches or as red, ulcerative areas, often causing discomfort and soreness. The ulcers associated with lichen planus can have a significant impact on a patient's quality of life, as they may interfere with eating and speaking.

While other systemic conditions listed can also have oral manifestations, lichen planus is specifically known for directly causing oral ulcers. Celiac disease can lead to oral symptoms such as glossitis or recurrent aphthous-like ulcers, but it is not directly a sole cause of ulcers. Rheumatoid arthritis primarily affects joints and may have extra-articular manifestations, including dry mouth due to medication side effects, which can lead to a higher risk of ulcers but is not a direct cause. Diabetes mellitus is associated with an increased risk of infections, including fungal infections that can present in the oral cavity, but again, it is not primarily known for causing ulcers.

Understanding lichen planus and its specific role in causing oral ulcers is essential for diagnosis and management in affected patients.