thrombocytopenia; "blood" in his mouth after the shot; had a severe rash on his trunk; blood blisters in his mouth after each of the three vaccines he received; low platelet count following vaccination/his platelets were extremely low; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team.  An 81-year-old male patient received BNT162b2 (BNT162B2), as dose 2, single (Batch/Lot number: unknown) for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE), for COVID-19 Immunization, reaction(s): ""blood" in his mouth after the shot", "blood blisters in his mouth after each of the three vaccines he received", "low platelet count following vaccination//his platelets were extremely low", "had a severe rush on his trunk", "Thrombocytopenia". The following information was reported: PLATELET COUNT DECREASED (non-serious) with onset 2022, outcome "unknown", described as "low platelet count following vaccination/his platelets were extremely low"; THROMBOCYTOPENIA (medically significant), outcome "unknown"; MOUTH HAEMORRHAGE (non-serious), outcome "unknown", described as ""blood" in his mouth after the shot"; RASH (non-serious), outcome "unknown", described as "had a severe rash on his trunk"; ORAL BLOOD BLISTER (non-serious), outcome "unknown", described as "blood blisters in his mouth after each of the three vaccines he received". The patient underwent the following laboratory tests and procedures: Full blood count: (2022) platelets were extremely low.  Clinical course: Daughter reporting on behalf of her father and is inquiring about reports of low platelet count following vaccination. She had read on the fact sheet that there were reports of thrombocytopenia. She is looking for any assistance with medical bills resulting from the vaccine. Her father received the first and second vaccine and one booster but did not receive the second booster as he was afraid. He had a severe rush on his trunk and "blood" in his mouth after the shot. She states that her father actually wrote to Pfizer. He initially got very bad rashes on his trunk and blood blisters in his mouth after each of the three vaccines he received. She states that soon after that her father had a full blood count done and his platelets were extremely low. She states that they called it thrombocytopenia. She states that never in her father's 80 years has he had blood work that showed this. Her father is now being treated by oncologist/hematologist and the treatments are very expensive. States that her father is on a fixed income and now is being left with medical bills. She states that she was hesitant to call, but she feels like Pfizer should know. States that she read this was a side effect in a small amount of people and she thinks that her father is one of those people. She states that it is documented in the email her father sent to Pfizer early on about his rashes and blood blisters. She states that her father was diagnosed with the low platelets 9-10 months ago. She states that it was so dangerously low, he could have bled out. She states that they are not looking for any compensation like for suffering or anything, they are looking for her father's medical treatments to be covered. She states that her father is getting a bill for 2000 dollars and his copay is 800. She states that her father has never experienced this in his whole life. She states that she is concerned about the possible legal ramifications to her father's credit and also her father's ability to pay his medical bills since he is being told that he might have to have the treatments for a long time. She states that she is not looking to sue or anything. She just wants to know if they have compensation. States that she got vaccines with no side effects, her husband got vaccines with no side effects, she knows most people are not having side effects. She believes though that her father is having side effects. She states that her father has just had the unspecified treatments for low platelets. States they are injections. She states that her father was having transfusions at first, but that did not work. Denies any other labs, testing, or treatments for her father relevant to these events. Rashes on trunk: She states that this occurred after each of her father's 3 doses of the Pfizer Covid 19 Vaccines. She does not know the dates of her father's vaccines. Blood blisters in mouth: She states that this occurred after each of her father's 3 doses of the Pfizer Covid 19 Vaccines. She does not know the dates of her father's vaccines. She states that after the rashes and blood blisters, she believes, that her father went to Pfizer's website and wrote an email to Pfizer. She states that even though those events occurred after each vaccine, her father kept getting the vaccines because he did not want to get Covid. Low Platelets: She states that her father was diagnosed in the late summer of 2022, or something like that. States that at first, she was not concerned but now her father has been in treatment for a while.  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300056891 Same patient/Vaccine,different event,different vaccine dose;US-PFIZER INC-202300057138 Same patient/Vaccine,different event,different vaccine dose;