Yeast infection; So I don't know but I was sitting up last night; I can't wear deodorant because it burns me when I put deodorant on or anything; It is like they keep turning red; I had a breast reduction and so I have been having problems with my breast; they keep turning red and the doctor is thinking that is infection; it burns me when I put deodorant on or anything; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A  56-year-old female patient received BNT162b2 (BNT162B2), on 08Jun2022 as dose 4 (booster), single (Batch/Lot number: unknown) at the age of 56 years for covid-19 immunisation. The patient's relevant medical history included: "Like I said the doctor has me on some, well I take high blood pressure medication" (unspecified if ongoing), notes: Other medical conditions and concomitant medications: Consumer stated, "Like I said the doctor has me on some, well I take high blood pressure medication(further clarification unknown). The patient took concomitant medications. Vaccination history included: Covid-19 vaccine (DOSE 1; MANUFACTURER UNKNOWN), for Covid-19 immunization; Covid-19 vaccine (DOSE 2; MANUFACTURER UNKNOWN), for Covid-19 immunization; Covid-19 vaccine (DOSE 3; MANUFACTURER UNKNOWN), for Covid-19 immunization. The following information was reported: MASTITIS (medically significant) with onset 16Jun2022, outcome "unknown", described as "I had a breast reduction and so I have been having problems with my breast; they keep turning red and the doctor is thinking that is infection; it burns me when I put deodorant on or anything"; ERYTHEMA (non-serious) with onset 16Jun2022, outcome "unknown", described as "It is like they keep turning red"; FUNGAL INFECTION (non-serious), outcome "unknown", described as "Yeast infection"; INSOMNIA (non-serious), outcome "unknown", described as "So I don't know but I was sitting up last night"; BURNING SENSATION (non-serious), outcome "unknown", described as "I can't wear deodorant because it burns me when I put deodorant on or anything". The patient underwent the following laboratory tests and procedures: Lab work: I have a yeast infection.. Therapeutic measures were taken as a result of mastitis, fungal infection, erythema, insomnia, burning sensation. The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.  Clinical Course: I ended up getting COVID arm or booster arm or whatever they call that, where it was a big red mark on my arm, like a big red circle Outcome of reaction/event at the time of last observation was unknown. doctor have me on antibiotic because they are thinking it is an infection but it keeps going from one breast to another; I ended up from taking the antibiotic. Outcome of reaction/event at the time of last observation was unknown. They put me back on it(Fluconazole) because I am back on the antibiotic because first, my left breast was red and now my right breast is red Outcome of reaction/event at the time of last observation was unknown. Then Consumer stated, "Okay, so 08Jun, I received my fourth Pfizer vaccination and then on the 16Jun, I had breast surgery. I had a breast reduction and so I have been having problems with my breast. It is like they keep turning red and the doctor is thinking that is infection and I am just wondering if that has anything to do with the vaccination." On paraphrasing the concern, Consumer stated, "Yes, what is happening is I had breast reduction on the 16th. So a week later, I ended up having breast reduction and from that point on, my breast has just been turning red. So, for the last few months, it has been read. I can't wear deodorant because it burns me when I put deodorant on or anything. I don't know if my lymph nodes are affected or something. So I don't know but I was sitting up last night and I am like I know I had the vaccine prior to the surgery, so I don't know if that may have triggered the issues with my breast. So, I am not sure." Age at the time of event: Consumer stated, "About a month after the shot, so I would say, I got in 16Jun. I say 16Jul2022 or 17Jul2022.". I can provide the previous one but not the one that I just took but I can give you the previous. It was 301358A (Captured as provided)."Any prior vaccinations (within 4 weeks) Consumer stated, "No, I did not. Everything has been six months after."Other medical conditions and concomitant medications consumer stated, "Like I said the doctor has me on some, well I take high blood pressure medication(further clarification unknown) but the doctor have me on antibiotic(Further clarification unknown hence captured as Unspecified medication) because they are thinking it is an infection but it keeps going from one breast to another. So, I am not sure. So, yes, I am on medication." Patient stated, "Yes I am, I am taking treatment now for the side effect, yes." Patient was on steroid. Patient stated, "Yes, I had lab work done at (Institution name-withheld) and they tested, I ended up from taking the antibiotic, I have a yeast infection. So, I ended up getting another infection. There is a lot I have been going through. So let me find this medicine. Let me find so that I can give you the name of(incomplete sentence). It is called Doxycycline Hyclate(further clarification unknown). That is what it is. That is what the doctor have me on." Patient stated, "Yes, so the name of the medication for my infection is called Fluconazole (Suspect captured conservatively). The doctor gave me for my infection." Then patient stated, "No, I used it because I ended up getting a yeast infection. So, now they put me back on it because I am back on the antibiotic because first, my left breast was red and now my right breast is red. So now, they put me back on it." Patient stated "No, when I received my first shot, my first COVID shot, I ended up getting COVID arm or booster arm or whatever they call that, where it was a big red mark on my arm, like a big red circle. The very first time I took it, so that is what made me think about this may have something to do with the fact because I did that and I did want to make sure."  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.  No Follow-up attempts are possible No further information is expected.