An object of the present invention is to provide a cyclic amine compound which has a potent inhibitory effect on the binding of α2C-adrenoceptor and is useful in preventing and treating disorders attributable to α2C-adrenoceptor.The above-described object is solved by the following cyclic amine compound, etc., wherein X is O, S, SO, SO2 or NR2, etc.; R1 is a hydrogen atom, a cyano group, a carboxyl group, a C2-C13 alkoxycarbonyl group, a carbamoyl group, etc.; Ar1 and Ar2 are the same or different and each represent an aryl or heteroaryl group which may be substituted by 1 to 3 substituents and so on; ring B is a benzene ring may be substituted by 1 to 3 substituents and so on; n is an integer from 1 to 10; and p and q are the same or different and each represent an integer of 1 or 2.