Pityriasis rosea is an erythematous scaly disease of unknown etiology, which usually does not occur on the face, but on the trunk and extremities. On the basis of the appearance of an oval mother spot, other round or oval red spots may appear on the body, covered with fine scales and may have some itching. If it grows on the face, two capsules of oral glycopyrrolate capsules three times a day, combined with one capsule of levocetirizine hydrochloride once a day. A topical calcium phosphatase inhibitor, such as 0.03% tacrolimus ointment, or pimecrolimus ointment, can be applied. If the patient feels discomfort from the irritation of this ointment, it can be replaced with zinc oxide borate ointment 1:1 mixed with black bean distillate for topical application. During the treatment period, it is necessary to avoid strong sunlight exposure as much as possible.