The mother spots of pityriasis rosea can generally appear at the beginning of the disease and can appear on any part of the body, but it is relatively rare for the mother spots to appear on the neck and face. The rash form of the mother spot is an oval or round-like erythematous spot covered with fine bran-like scales, and the long axis of the mother spot is in line with the skin’s dermatoglyphic alignment. The mother spot can be accompanied by itching, other rashes can start to appear one after another after the appearance of the mother spot, generally in the treatment of a month, it can reach a peak, gradually back to recede, generally to two months basically can subside. Pityriasis rosea is a self-limiting disease, sometimes without treatment can also be self-healing. If itching is more intense, you can take oral antihistamines, such as levocetirizine hydrochloride capsules, loratadine capsules or loratadine capsules, etc.