diagnosed with granuloma anular; stated last week she got mouth ulcers for no reason and then they cleared up and she was diagnosed with covid; every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine; every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 58-year-old female patient received BNT162b2 (BNT162B2), as dose 3 (booster), single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE: 2, she had three booster doses of the Pfizer BioNTech covid-19 vaccine , Caller stated that every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine;), for COVID-19 immunization, reaction(s): "bleeding gums", "she gets mouth blisters"; Bnt162b2 (DOSE: 2, she had three booster doses of the Pfizer BioNTech covid-19 vaccine , Caller stated that every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine;), for Covid-19 immunization, reaction(s): "ulcers"; Bnt162b2 (DOSE: 1, she had three booster doses of the Pfizer BioNTech covid-19 vaccine, Caller stated that every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine;), for COVID-19 immunization, reaction(s): "bleeding gums", "she gets mouth blisters"; Bnt162b2 (DOSE: 1, she had three booster doses of the Pfizer BioNTech covid-19 vaccine, Caller stated that every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine;), for Covid-19 immunization, reaction(s): "ulcers". The following information was reported: GRANULOMA ANNULARE (non-serious), outcome "unknown", described as "diagnosed with granuloma anular"; MOUTH ULCERATION (non-serious), outcome "unknown", described as "stated last week she got mouth ulcers for no reason and then they cleared up and she was diagnosed with covid"; BLISTER (non-serious), GINGIVAL BLEEDING (non-serious), outcome "unknown" and all described as "every time she gets a dose of vaccine she gets mouth blisters and ulcers and bleeding gums and this happens every time within 7 days of the dose of vaccine". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: "Patient just wanted to get some information on the Pfizer COVID-19 vaccine. Patient had like three boosters and she was looking at oral side effects. She currently have COVID which is absolutely nasty. What I wanted to find out is the incidence of oral reactions like blisters and stuff in your mouth. Every time I've got a COVID vaccine I've broken out with mouth blisters and bleeding gums. she still want and I got them all but I didn't get my last booster and I've had three. Every time, within seven days of getting the vaccine, she get what she thought was shingles. It's mouth blisters and bleeding gums, ulcers in my mouth and then that would clear up. The last person she saw was a dermatologist and he said I had an autoimmune response because I've broken out with something called granuloma annular all over my arms and legs and he said it was an autoimmune response to the COVID vaccine. He advised not to get another vaccine. Last week I broke out with mouth ulcers again for no reason, I didn't take a vaccine and then they cleared out and then I got hit with full force COVID. I'm on Paxlovid right now, its been seven days and I'm still testing positive but I don't feel like I'm going to die at least. My concern is this something that has come up before? Apparently this is something other people has experienced." She wants to know this information in order to decide if she should get another booster or not.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.