break out in little itchy bumps was reported as worsened; her face is little flushed; experiencing allergic symptoms; break out in little itchy bumps; headache; This is a spontaneous report from a contactable consumer (patient). A 65-years-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EL6202, Expiry Date: Unknown), dose 2 via an unspecified route of administration, administered in Arm Left on 23Feb2021 at 22:30 (at the age of 65-years-old) as a DOSE 2, SINGLE for covid-19 immunisation. The patient medical history included coeliac disease reported as, Celiac autoimmune, on no autoimmune meds, she deals with a strict gluten free diet, this was diagnosed 15 years ago, when she was 50. Patient had seasonal allergy (pollen), food allergy, milk allergy (she doesn't eat dairy), food allergy, she was allergic to shellfish she has to have an Epi pen, and other food can create problems, histamine wise, she knows that she was that sort of an allergic person and had nasal congestion all from an unknown date and unknown if ongoing. Concomitant medications included montelukast (MONTELUKAST) 10 mg tablet by mouth once daily taken for nasal congestion, reported as, Initially provides as Singulair, then stated it was Montelukast. Started taking all the time about a year ago start and stop date were not reported. The patient previously received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EL9264, Expiry Date: Unknown), dose 1 via an unspecified route of administration, administered in right upper arm on 03Feb2021 (at the age of 65-years-old) as a DOSE 1, SINGLE for covid-19 immunisation. She reported, first dose lot was EL9264, asked her husband if that lot number is a 1 or 4, then confirmed the last digit was a 4, and the date of that first dose was 03Feb2021; by injection once to right upper arm. The patient reported that, event following prior vaccinations was not generally, no, she felt safe taking it, generally gets through fine, she recently did shingles vaccine within year, fine and all flu shots were fine. Vaccination Facility Type was reported as state run site at the stadium, it's amazing, they vaccinate people around the clock. Vaccine was not administered at Military Facility. Additional Administered Vaccines were none. Prior Vaccinations (within 4 weeks) were none. The patient experienced headache on 23Feb2021, break out in little itchy bumps on 24Feb2021, break out in little itchy bumps was reported as worsened on an unspecified date, her face is little flushed and experiencing allergic symptoms both on 25Feb2021. Reporter wanted to know whether she may take Benadryl after receiving the 1st dose of the Covid vaccine. Reporter received the 1st dose of the Pfizer Covid vaccine 36 hours ago. She took Tylenol last night because she had a headache from the vaccine. Currently, she was experiencing allergic symptoms which she suggests could be from the pollen in her area. She reported about her second shot, Pfizer COVID vaccine, received it on Tuesday night at 10:30PM, a little over 36 hours ago. She reported as she was an allergy person, she had high allergies to things, so she is allergic, but she was not in danger, she was breathing fine, but today she was noticing, and even yesterday, she was breaking out in little itchy bumps, she is also celiac, so autoimmune, but has no other auto immunes, and was on no drugs, she is overall healthy, so she was wondering since the itching with the bumps on her neck and maybe upper chest, they are minor, not all over her body, her hands are clear, and her face was little flushed, but that was the extent, but she wondered if she would be allowed to take an antihistamine, like Benadryl, would it be harmful, like get in the way of the vaccine's efficacy? She explained, there was a lot of pollen out there, she was allergic, the last few days she's been outside, and noticed because of spring and pollen, and as well as she had food allergies. Primary care doctor was in another state, and she had one out there, but has had no reason to see them as she's been very healthy, all that mask wearing, and social distancing. She woke up with this yesterday (date unspecified), she went to bed, then was itchy around her neck and had one or two bumps. It was slightly more bothersome today than yesterday. She had a lot of allergies, she doesn't eat dairy, she was very allergic to shellfish, with shellfish she had to have an Epi pen, and other food can create problems, histamine wise, she knew that she was that sort of an allergic person. She reported that she lived with this stuff all the time, she knew when it was bad, it was not severe, her breathing was fine, no tongue swelling. She experienced mild headache after her second dose. Asked, if she can take medication. Family Medical History Relevant to the events were none. Relevant tests done were none. Event did not require a visit to the emergency Room or Physician Office. Therapeutic measures were taken as a result of headache. Outcome of the breakout in little itchy bumps was not resolved whereas outcome of the break-out in little itchy bumps was reported as worsened, her face is little flushed, headache and experiencing allergic symptoms were unknown.  No follow up attempts are possible. No further information is expected.