The problem to be solved by the present invention is to provide a method for treating detrusor hyperactivity with impaired contractility. The present invention provides a method for treating detrusor hyperactivity with impaired contractility, which contains 3-(15-hydroxypentadecyl)-2,4,4-trimethyl-2-cyclohexen-1-one, a salt of the compound or a solvate of the compound or the salt as an active ingredient.
