breast cancer; She developed a rash on Jun2021.; 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 51-year-old female patient received BNT162b2 (BNT162B2), on 22Apr2021 as dose 2, single (Batch/Lot number: unknown) at the age of 50 years for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: BNT162b2 (Dose: 1), administration date: 02Apr2021, for COVID-19 immunization. The following information was reported: RASH (non-serious) with onset Jun2021, outcome "unknown", described as "She developed a rash on Jun2021."; BREAST CANCER (medically significant) with onset Aug2021, outcome "unknown". The event "she developed a rash on jun2021." required physician office visit. The patient underwent the following laboratory tests and procedures: Biopsy: (06Dec2021) Unknown results, notes: Miscrospic diagnosis from where they took the the biopsy, the left trapezial neck. Therapeutic measures were taken as a result of rash.  Clinical course- She had both doses Apr2021 and had second dose 22Apr2021. Got a really bad rash on her neck, that started with both sides sides of the neck and went to her eye sockets and all the way around her eyes. Was also on her lips, above, below and right on her lips. She did not think it started happening until early in the second week of Jun2021. Did not put together with the  vaccine until she had been in and out of the doctor offices between then and early Feb2021. Went to a dermatologist several times and a general practitioner several times and also went to an allergist. Went to a dermatologist for a third time and they did a biopsy that came back showing a hypersensitivity to a recent medication that was administered. The Covid vaccine was the only thing that had been administered for several years. In the meant time, she was diagnosed with breast cancer Aug2021 and was not sure if that had anything to did with that. The biopsy mentioned being related to something that was administered and she did not even know she had breast cancer until Aug2021. The rash started in Jun2021, before that. The allergist was not diagnose her because they could not get a hold of any ingredients from the vaccine she had. The clinical trial did release only a few of the ingredients. It comes across as contact dermatitis and was something that was clearly a reaction from neck up. It was clearly from this product and something they can put that triggers a reaction like this. This had been going on a year with this rash and she had been able to control and moved to allergen free products.  She could still react and had to wash herself in certain ways. Treatment: Tried topical treatments, including Fluticasone Propionate cream and tried and ointment called Cerave healing ointment and Vaseline. Sometimes stop working. Had a prescription from allergist for one of the meds and they told her to take Vaseline and Cerave healing ointment. She alternates those and still use them everyday, multiple times a day. Provides the names of the 2 medications that she states stop working as, Vaseline and Aquaphor. She was use the Vaseline a little bit then kind of needs to with something else, alternating with Vaseline for a day then switches off.   The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.