Pharmaceutical composition for dermal use to treat psoriasis comprising a vitamin D and a corticosteroid

A pharmaceutical composition takes the form of a mono-phase ointment which is used for the topical treatment of psoriasis. These ointments can be prepared by melting white soft paraffin, adding a solution of one active ingredient in a solvent, followed by addition of a dispersion of a second active ingredient in paraffin oil, and then cooling the mixture. In other embodiments, the composition can be a cream, a lotion, a liniment or other spreadable liquid or semi liquid preparation which is nonaqueous, or is an oil-in-water or water-in-oil emulsion.