This is a spontaneous report from a contactable consumer or other non hcp (patient). A 79-year-old female patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VAC-CINE; Solution for injection, Batch/Lot Number: EN6198; Expiration Date: 30Jun2021) via an un-specified route of administration, administered in arm left on 28Feb2021 10:45 in the morning (at the age of 79-year-old) at dose 2, single for covid-19 immunisation. Medical history included dry eye (Exfoliation of eye, like a glaucoma. Had for 5-6 years), eczema (Had it as a child when she was kindergarten or first year, she outgrew it or was taken to the doctor), thyroiditis. Patient did not have history of all previous immunization with the Pfizer vaccine considered as suspect. Prior Vaccinations (within 4 weeks) was none. Adverse event following prior vaccinations was none. Family Medical History Relevant to adverse event was none. Concomitant medication included levothyroxine sodium (LEVOTHYROXINE [LEVOTHYROXINE SODIUM]) at 0.025 mg, 1x/day orally taken for thyroiditis in the morning by mouth (ongoing) (Started years ago); fish oil (OMEGA 3 FISH OILS) at 1000 mg, 1x/day, 1 a day in the morning, 650 epa/450 dha, 1000mg by mouth (ongoing) (Has been taking for 4-5 years); biotin (BIOTIN) at 5000 ug, 5000 mcg by mouth orally (ongoing) (Taking it for 4 months), dietary supplement (over the counter digestive one a day by mouth). Patient previously received first dose of BNT162B2(PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EN6201; Expiration Date: 30Jun2021) via an unspecified route of administration, administered in left upper arm on 07Feb2021 (at the age of 79-year-old) at dose 1, single for covid-19 immunisation. On 28Feb2021 the patient experienced red spot with itching / red 4 inch from top to bottom, 1 and 3/4 redness across the entire area, red spot with itching / itchy experience, border on the bottom that looks like a bruise on left upper arm where i had the shot. Patient got a reaction in that patient experiencing a red spot with itching, like poison ivy, an itchy experience. Patient reported a red 4 inch from top to bottom, 1 and 3/4 redness across the entire area with a border on the bottom that looks like a bruise on left upper arm where patient had the shot. And asks, Is this normal how long does it last. The reporter is calling about the Pfizer covid vaccine shot number 2. The reporter received the second shot of the vaccine on 28Feb2021 10:45 in the morning. Everything was fine but she now has a red spot which is 4 inches from top to the bottom and an inch and 3/4 across. The instructions said that this would be a side effect. The red spot is itching, it feels like poison ivy, bouts of itching, there is a ribbon of bruising about an eighth of inch at the red spot. The reporter wants to know how long it will last and if its normal. Could it be from a needle with bacteria, or a reaction to the band aid. Event: The red spot remained the same, except the bouts of itching, and the top of it got a little redder. First dose: Received 07Feb2021, Lot EN6201, expiration date 30Jun2021. Received in left upper arm. Second dose: Received 28Feb2021, Lot EN6198, expiration 30Jun2021. Received on the left upper arm. The reporter mentions that she had nothing form the first shot and didn't know if it was common for something to happen after the second dose. The reporter asks why she didn't have the same reaction to the first shot. Adverse event did not require a visit to emergency room, physicians office. Outcome of the events was unknown.   No follow-up attempts are possible. No further information is expected.