Received her second Pfizer Covid 19 Vaccinne on the back of the arm  about 12-14 inches below/she thinks this was given subcutaneous; Huge welt left arm; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 54 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 06May2021 (Lot number: EW0167) at the age of 54 years as dose 2, 0.3 ml single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (Dose 1, single, Lot number: EW0153, Anatomical location: Left arm, Dose Description: 1ST DOSE, 0.3 ML SINGLE), administration date: 08Apr2021, for COVID-19 immunization. The following information was reported: INCORRECT ROUTE OF PRODUCT ADMINISTRATION (non-serious) with onset 06May2021, outcome "unknown", described as "Received her second Pfizer Covid 19 Vaccinne on the back of the arm  about 12-14 inches below/she thinks this was given subcutaneous"; VACCINATION SITE URTICARIA (non-serious) with onset May2021, outcome "unknown", described as "Huge welt left arm".  Additional Information: It was stated that the patient received her second Pfizer Covid 19 Vaccine on the back of the arm about 12-14 inches below where it should have been. The patient asked if she would need another vaccine. The patient thought that the vaccine was not given in normal spot: When she got her second vaccine, the person did not do it in the normal spot. She asked if it was normal to be done on the arm, behind the arm, toward the back. The patient used to be a medical assistant, and she thought this was given subcutaneous. The patient that she even nicely said why are you doing it back there and the girl did not change and said that it was there where it was to be done. She also knew her needle sizes, and that the needle used was a very small needle. The patient  asked if she would need to get another vaccine now, and was it in her blood or what now. The patient  said it was probably 12" down or more on her arm, and it was towards the back so it is well past that area. The patient stated she said dang, did everybody get it in that area. The patient   was a medical assistant, and not a healthcare provider. The patient just wanted to make sure in case she was wrong. She reached out to her friends to see if anything changed. While describing location of where she received her vaccine, the patient discovered a welt on her arm. The patient reported on the welt. The patient clarifies she just now discovered it and did not know when it first occurred. It is huge to her. She has never had a welt.  It looks like more than a quarter size now. She has never had a vaccine reaction in the past. Caller unable to answer additional questions as she just discovered the welt. The patient said but the first one was where it should be, it was in the area where it should be but this one was way in the back.  The patient that the first was the right location, but the angle was off. The patient added that she was going to take a picture if needed. The angle was off. She will take a picture now and save it just in case. She got it because she is in her 50s and she is not super healthy, but she is not super unhealthy. Her kids wanted her to. She did not want to be sorry later because if she was so afraid to get it because if she got Covid and everyone else had gotten vaccinated and had herd immunity. There was no history of all previous immunization with the Pfizer vaccine to be considered as suspect. No vaccines administered on same date with the Pfizer vaccine to be considered as suspect.  No follow-up attempts are possible. No further information is expected.