Tehran University of Medical Sciences Iranian Journal of Psychiatry 1735-4587 2 2 2007 06 15 82 85 Shirin Abedian Mental Health Research Centre Department of Psychiatry, Iran University of Medical Sciences, Tehran, Iran Mehrdad Eftekhar Mental Health Research Centre Department of Psychiatry, Iran University of Medical Sciences, Tehran, Iran Amir Shabani Mental Health Research CentreDepartment of Psychiatry, Iran University of Medical Sciences, Tehran, Iran 2015 10 17 Objective: Although there are some reports of reduction of obsessive-compulsive symptoms in manic episodes or its exacerbation during depressive episodes, this relationship has not been proved. Method: Clinical observations of six cases with co-morbidity of bipolar-I-disorder and obsessive-compulsive disorder or symptoms. Results: The cases presented here show heterogeneity and variety of the relationships between the obsessions and bipolar-I-disorder.Limitations: Low sample size and non-random sampling. Conclusions: This variety of clinical presentations may indicate the presence of different clinical groups that their validity should be assessed through more systematized studies. https://ijps.tums.ac.ir/index.php/ijps/article/view/442 https://ijps.tums.ac.ir/index.php/ijps/article/download/442/435