developed a rash; looked like a psoriasis patch or old age patch on her thighs; red spots on right inner thigh/red spots on her left inner thigh/streaky spots on her abdomen/spots on the hips; looks like hives and not like wheals that are just there; a few blotches of the little spots on her thigh again; received her third shot of Pfizer Biontech COVID19 vaccine; This is a spontaneous report from a contactable Nurse. This 75-year-old female Nurse (patient) reported for herself that: A 75-years-old female patient received third dose of bnt162b2 (COMIRNATY, Solution for injection, Lot Number: FF8839), via an intramuscular, administered left deltoid on 24Sep2021 (at the age of 75-years-old) as DOSE 3 (BOOSTER), SINGLE for covid-19 immunization. Medical history included collapse of bones from an unknown date and unknown if ongoing. The patient concomitant medications were not reported. The patient had previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: EL3249), via an unspecified route of administration, administered in left deltoid on 15Jan2021 (at the age of 74-year-old) as DOSE 1, SINGLE and second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE, Solution for injection, Lot number: EL9269), via an unspecified route of administration, administered in left deltoid on 05Feb2021 (at the age of 74-year-old) as DOSE 1, SINGLE, both doses for COVID-19 immunization. On 24Sep2021, the patient received her third shot of PFIZER BIONTECH covid19 vaccine. On an unspecified date, the patient experienced developed a rash, looked like a psoriasis patch or old age patch on her thighs, red spots on right inner thigh/red spots on her left inner thigh/streaky spots on her abdomen/spots on the hips, looks like hives and not like wheals that are just there and a few blotches of the little spots on her thigh again. It was reported that, patient needed to know because she cannot find the fact sheet if indeed a rash is an adverse or side effect of the Covid vaccine third shot. Wanted to know if it is something else that needed to be addressed or another reason. Stated that it was not with the first or second shot. Stated that she shrunk before the shot which is the normal old age collapse of bones. Stated that she had no changes in medications, detergents, soaps and lotions. No further details provided about her medications. Stated that it began and she noticed one morning one spot on her inner right thigh. Stated that by the next day that she had a couple of more spots and then had some on her left inner thigh and then the next day had spots on her abdomen. Stated that it looked like a psoriasis patch or old age patch on her thighs. Stated that by the time it reached her abdomen that it was a streak. Stated that it was on her hip side across the abdomen. Stated that they disappeared and then showed up again. Stated that she had the shot on 24Sep and did not notice the first spot until a couple of weeks later. Stated that it sort of disappeared. Stated that Sunday she has a little streak again on her abdomen. Stated that they do not burn, itch or sting. Stated that this morning that she has a few blotches of the little spot on her thigh again. Stated that it looks like hives and not like wheals that are just there. Stated that the spots on her left inner thigh started the second week of Oct. Stated that the streaky spots on her abdomen resolved two days ago. Recovered completely. Stated that the spots on the hips lasted three to four days and disappeared. On an unspecified date in May2021, the patient underwent lab tests and procedures which included blood test: unknown result. The patient did not received treatment for the adverse events. The outcome of event red spots on right inner thigh/red spots on her left inner thigh/streaky spots on her abdomen/spots on the hips was recovered on an unspecified date, while the outcome of others events was not recovered.  Follow-up attempts are completed. No further information is expected.