Dermatitis remedies for external use, containing as the active ingredient compounds represented by the general formula [I] or pharmacologically acceptable salts thereof: [I] wherein R1 and R2 are each lower alkoxy =X- is the group represented by the following formula: or the group represented by formula: =N- A is a saturated or unsaturated nitrogen-containing heterobicyclic group having one to four substituents selected from among hydroxyl, oxo, lower alkoxy, di(lower alkyl)aminophenyl, piperidino(lower alkoxy), morpholino(lower alkoxy), cyclo(lower alkyl)amino(lower alkyl)amino, pyridyl, and morpholino and symbol represents a single or double bond.