Evaluation of Psychological Disorders in patients with Oral Lichen Planus; a Case Control Study.

Background and objective; Interest in the idea that immunological pathways may be involved in the etiology of subset of psychotic disorders has grown over the past few decades. The goal of this study was to investigate the psychiatric issues in individuals with oral lichen planus.  Method; This is a case control study which has been done at Oral & Maxillofacial medicine department in Khanzad Teaching Center and Erbil Dermatology Center between January 1st and August 1st, 2022. The Depression Anxiety Stress Scale -21 questionnaires were used to assess the psychological condition of patients with oral lichen planus. The sample consists of 100 participants, 50 of whom have oral lichen planus and 50 of healthy controls. Results: There were considerable differences between the two groups, according to the oral lichen planus the values for stress (50%), anxiety (22%), and depression (34%), whereas the values in the control group were [stress (20%), anxiety (0.0%), and depression (20%)].  Among the cases, (90.0%) had only oral lesions and (76.0%) of which had symptoms. Anxiety, and stress had statistical significance relation (0.002, 0.001) respectively in patients with symptomatic lesions (erosive and atrophic type) that produce pain and discomfort. Conclusion: The autoimmune diseases including the oral lichen planus has correlation with psychological factors, this research has shown the unfavorable impact of these oral lesions on the patient's psyche.