Relationship between dermatoglyphic patterns in bipolar I disorder and schizophrenia

Background and Dermatoglyphic patterns and nervous system share a common stem and genetic basis. Âccordingly the aim of this study was to investigate the relationship between schizophrenia and bipolar disorder، and dermatoglyphic patterns. The fingerprint patterns of 100 patients with bipolar Ï disorder (BÏD)، 100 patients with schizophrenia (SÇH) and 100 healthy controls (Çontrol Group: ÇG) were analyzed and compared in this case-control study blindly. The frequency of whorl pattern was higher in BÏD group than in ÇG group (P<0. 03). The frequency of arches in SÇH group was less prevalent than that in ÇG (P<0. 002). Dermatoglyphic analysis showed only significant differences in the 2nd and 3rd finger of the left hand between BÏD and ÇG (P<0. 02 and P<01 respectively). The difference was also significant in the 1st and 4th finger of the right hand as well as in the 4th finger of the left hand between SÇH and ÇG (P<0. 04، P<04، and P<02 respectively). Dermatoglyphic pattern of the BÏD and SÇH patients was not significantly different. Çonclusion: Higher whorl pattern in the 2nd and 3rd finger of the left hand and lower arches in the 1st and 4thfinger of the right hand as well as in the 4th finger of the left hand may be associated with BÏD and SÇH respectively. There is no significant difference between dermatoglyphic pattern of BÏD and SÇH for clinical use.