Background:Obsessive–compulsive disorder (OCD) and trichotillomania (repetitive hair-pulling; TTM) are debilitating conditions. The present study was conducted to phenomenologically compare obsessive compulsive disorder and trichotillomania. Material &Methods:In the present study 50 OCD patients and 50 TTM patients of age group 18 to 75 years were included. Demographic data was collected. Participants completed the self-report Young Schema Questionnaire to assess the current profile of fundamental maladaptive beliefs in OCD and TTM. Data was analyzed using SPSS version 21. p value ≤0.01 considered statistically significant. Results:TTM patients had an earlier age of onset of illness compared to patients with OCD. YBOCS score for OCD patients was 20.4 and MGHHPS score for TTM patients was 16.3. The severity of depressive symptoms BDI score was more in OCD patients than TTM patients. Pair-wise comparison indicated that OCD and TTM patients differed significantly on 5 schemas, i.e. mistrust / abuse, social isolation, shame / defectiveness, subjugation and emotional inhibition. More specifically, OCD patients had significantly higher scores on each of these schemas compared to TTM patients. Conclusion:The study concluded that there was significant difference between 5 schemas, i.e. mistrust / abuse, social isolation, shame / defectiveness, subjugation and emotional inhibition and more specifically, OCD patients had significantly higher scores on each of these schemas compared to TTM patients. These findings support differences in underlying psychobiology and may necessitate contrasting treatment approaches.