severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body; finished with an allergic rash all over her body; right buttock was itching more than any other part of body, and now it feels very sore; Initial information received on 04-Jan-2022 regarding an unsolicited valid  non-serious case received from a pharmacist.  This case involves a 54 years old female patient who experienced severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body, finished with an allergic rash all over her body and right buttock was itching more than any other part of body, and now it feels very sore while receiving vaccine DIPHTHERIA-2/TETANUS/5 AC PERTUSSIS VACCINE [ADACEL] and while treated with METHOTREXATE [OTREXUP].   The patient's past medical history, medical treatment(s), vaccination(s) and family history were not provided.  Concomitant medications included DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Allergic reaction.  On an unknown date, the patient started taking OTREXUP (METHOTREXATE) formulation unknown dosage unknown (with an unknown batch number) for prophylactic vaccination.  On 08-Dec-2021, the patient received a  dose of suspect DIPHTHERIA-2/TETANUS/5 AC PERTUSSIS VACCINE lot number not reported via unknown route in unknown administration site.  On 24-DEC-2021 the patient developed a non-serious severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body (pruritus) (unknown latency) following the first dose intake and (unknown latency) following the last dose intake of METHOTREXATE.  On 24-DEC-2021 the patient developed a non-serious finished with an allergic rash all over her body (dermatitis allergic) (unknown latency) following the first dose intake and (unknown latency) following the last dose intake of METHOTREXATE.  On 24-DEC-2021 the patient developed a non-serious right buttock was itching more than any other part of body, and now it feels very sore (pain) (unknown latency) following the first dose intake and (unknown latency) following the last dose intake of METHOTREXATE.On 24-DEC-2021 the patient developed a non-serious severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body (pruritus) 16 days following the administration of DIPHTHERIA-2/TETANUS/5 AC PERTUSSIS VACCINE.  On 24-DEC-2021 the patient developed a non-serious finished with an allergic rash all over her body (dermatitis allergic) 16 days following the administration of DIPHTHERIA-2/TETANUS/5 AC PERTUSSIS VACCINE.  On 24-DEC-2021 the patient developed a non-serious right buttock was itching more than any other part of body, and now it feels very sore (pain) 16 days following the administration of DIPHTHERIA-2/TETANUS/5 AC PERTUSSIS VACCINE.  Action taken with DIPHTHERIA, TETANUS AND ACELLULAR PERTUSSIS VACCINE (ADACEL) and METHOTREXATE (OTREXUP) was not applicable.  It was not reported if the patient received a corrective treatment for the events (severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body, finished with an allergic rash all over her body, right buttock was itching more than any other part of body, and now it feels very sore).  At time of reporting, the outcome was Unknown for the event severe itching that started from her extremities (hands and legs)/her right buttock was itching more than any other part of body, was Unknown for the event finished with an allergic rash all over her body and was Unknown for the event right buttock was itching more than any other part of body, and now it feels very sore.