I had little rashes all over my butt and going down to my upper leg; it was itchy I was scrubbing all over it; hives; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team, Program ID: (159558). The reporter is the patient.  A 69-year-old female patient received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 27Sep2023 at 15:30 as dose 1, single (Lot number: HH7595) at the age of 69 years, in right arm for covid-19 immunisation; influenza vaccine (INFLUENZA VACCINE), on 27Sep2023 at 15:30 as dose number unknown, single (Batch/Lot number: unknown), in left arm for influenza immunisation. The patient's relevant medical history included: "Anxiety" (unspecified if ongoing); "Palpitations" (unspecified if ongoing); "High cholesterol" (unspecified if ongoing). Concomitant medication(s) included: LEXAPRO oral, start date: Jul2013; ATORVASTATIN oral taken for blood cholesterol increased, start date: Mar2023; METOPROLOL TARTRATE oral taken for palpitations, start date: Apr2023; CALCIUM. The following information was reported: RASH (non-serious) with onset 28Sep2023, outcome "unknown", described as "I had little rashes all over my butt and going down to my upper leg"; URTICARIA (non-serious) with onset 28Sep2023, outcome "unknown", described as "hives"; PRURITUS (non-serious) with onset 28Sep2023, outcome "unknown", described as "it was itchy I was scrubbing all over it". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of rash, pruritus, urticaria.  Additional information: Caller stated that she received the flu shot and the COVID vaccine yesterday afternoon around 3:30. Caller stated when she woke up today she was fine, she came downstairs and then all of a sudden within half hour, she had little rashes all over butt and going down to upper legs. it wasn't going down, only several inches. and she put some creams on it to alleviate it and different things for itching other than that she thought she could just give it some shower, So she came to the shower, wash all over, it was itchy she was scrubbing all over it. she was probably irritated. When she got out, there were more like bunches of them, these rashes and put cream over it. Caller stated that the one on her finger went away. Caller added that she applied itch cream over that rashes about half an hour ago and she stated It was feeling pretty good and she also took antihistamine. Caller added that that she had the rashes nowhere else in the body only in the butt area and legs and other sensitive area. Caller mentioned that she was very healthy with no health issue. Caller got the COVID vaccine and flu shot and this morning and had hives on her legs and finger she put cream on it. She would like to know if its common. No, it was not all over body, it was only on butt like hind area with two cheeks and going down the legs little bit may be only couple of inches, just that area and then she had one on finger but that disappeared. So, it was not on lower legs, it was not on arms, not on upper abdomen, no, none of that. She mentioned that she took the Flu shot and the COVID vaccine yesterday at 3:30. She confirmed that she was pertaining to the Pfizer the newly release Pfizer COVID vaccine. Caller stated that when she woke up today she was feeling fine and then all of a sudden within half an hour she had hives all over her butt going down to her upper leg. Caller also added that she applied some cream and take antihistamine and she would like to report an incident. she do take other medications and she do not really have any (incomplete sentence), sure. Treatment Triamcinolone Acetonide, it was a cream. It says apply to affected area two times a day. she took it today (28Sep2023), when this hives occurred, today. The other thing she took was Antihistamine Cetirizine Hydrochloride Tablet 10 milligram tablet orally. Patient did not took any other vaccine prior in 4 weeks. When she got up this morning, she had like an itch on her butt, and within 20 minutes, she had like full hives all over her butt down to her legs. She put cream and stuff on it, but it still bothered her, so she got a shower and put some more cream on it. It settled down a little because she put itching cream and different things on it, but she can still see the hives. She would like to know if that was common. She had hives on her butt down to her legs and she also used an itch cream but did not indicate the specific name of the medicine.  No follow-up attempts are possible. No further information is expected.