Itching/itching on my inner arms, upper chest and back that last about 10-20 minutes; Developing rashes (that look like little bubbles on my skin); Allergic reaction to the site.; My leg developed a softball size welt; Discoloration; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 44-year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm left, administration date 20Jan2021 16:30 (Lot number: EI9263) at the age of 44 years as dose 1, single for covid-19 immunisation. The patient was not pregnant at time of vaccination. Relevant medical history included: "Breast Cancer", start date: Nov2020 (unspecified if ongoing), notes: other medical history: Breast Cancer and Lymphedema; "Lymphedema", start date: Mar2021 (unspecified if ongoing); "known allergies: pineapple" (unspecified if ongoing), notes: known allergies: pineapple, Sulfas, Doxycicline; "known allergies: Sulfas" (unspecified if ongoing); "COVID-19" (unspecified if ongoing), notes: if covid prior vaccination: Yes; "radiation treatment", start date: 28Dec2020, stop date: 26Jan2021. Concomitant medication(s) included: TAMOXIFEN; PROTONIX [OMEPRAZOLE]; MICARDIS; LEXAPRO. Past drug history included: Doxycicline, reaction(s): "known allergies: Doxycicline". The following information was reported: URTICARIA (non-serious) with onset Jan2021, outcome "recovered" (2021), described as "My leg developed a softball size welt"; SKIN DISCOLOURATION (non-serious) with onset Jan2021, outcome "recovered" (2021), described as "Discoloration"; PRURITUS (non-serious) with onset 27Jan2021, outcome "recovered" (27Jan2021), described as "Itching/itching on my inner arms, upper chest and back that last about 10-20 minutes"; VACCINATION SITE REACTION (non-serious) with onset 25Jan2021, outcome "recovered" (2021), described as "Allergic reaction to the site."; RASH (non-serious) with onset 27Jan2021, outcome "recovered" (27Jan2021), described as "Developing rashes (that look like little bubbles on my skin)". The events "my leg developed a softball size welt", "discoloration", "itching/itching on my inner arms, upper chest and back that last about 10-20 minutes" and "allergic reaction to the site." were evaluated at the physician office visit and emergency room visit. The event "developing rashes (that look like little bubbles on my skin)" was evaluated at the physician office visit. Therapeutic measures were taken as a result of urticaria, skin discolouration, pruritus, vaccination site reaction, rash.  Additional information: Patient stated, my leg developed a softball size welt, discoloration and itching about 2-3 days after I received the dose. On day 5, I went to the urgent care at withheld and they said that I had an allergic reaction to the site. In addition, on day 7, I started developing rashes (that look like little bubbles on my skin) and itching on my inner arms, upper chest and back that last about 10-20 minutes. The patient received vitamins other medications in two weeks. The patient was told to take Benadryl and Tylenol treatment received for the adverse event. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. Since the vaccination, has the patient had not been tested for COVID-19.  Follow-up attempts are completed. No further information is expected.