Psychological profile and unexpected pain in oral lichen planus: A case–control multicenter SIPMO studya

Objectives To analyze psychological profiles, pain, and oral symptoms in patients with oral lichen planus (OLP). Materials and methods 300 patients with keratotic OLP (K‐OLP; reticular, papular, plaque‐like subtypes), 300 patients with predominant non‐keratotic OLP (nK‐OLP; erythematosus atrophic, erosive, ulcerative, bullous subtypes), and 300 controls were recruited in 15 universities. The number of oral sites involved and oral symptoms were recorded. The Numeric Rating Scale (NRS), Total Pain Rating Index (T‐PRI), Hamilton Rating Scales for Depression and for Anxiety (HAM‐D and HAM‐A), Pittsburgh Sleep Quality Index (PSQI), and Epworth Sleepiness Scale (ESS) were administered. Results The OLP patients, especially the nK‐OLP, showed higher scores in the NRS, T‐PRI, HAM‐D, HAM‐A and PSQI compared with the controls (p‐value