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; stated last week she got mouth ulcers for no reason and then they cleared up and she was diagnosed with covid; 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 1, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: 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"; 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". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: 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; stated she went to a dermatologist and they told her that was an autoimmune response to the vaccine and she was diagnosed with granuloma annular. Every time I´ve got a Covid vaccine vaccine I've broken out with mouth blisters and bleeding gums. I 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, I get what I thought was shingles. It´s mouth blisters and` bleeding gums, ulcers in my mouth and then that would clear up. The last person I 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, it's 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 is this something that has come up before? Description of Product Complaint: Description of complaint: Suspect Product Full report details not able to be obtained due to caller disconnected; stated right now she is diagnosed with Covid and is taking Paxlovid; stated that she had three booster doses of the Pfizer BioNTech covid-19 vaccine and when the transferring agent probed the caller's doses of vaccine, the caller stated she wants to get her 3rd booster of the vaccine.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.