continuous urination; he was a type 2 diabetic and knew this could be a symptom of that, but he has not had an issue with frequent urination since 2005; continuous urination/waking up 6 times a night urinating and a lot during day/frequent urination; could be a symptom of type 2 diabetic, but he has not had an issue with frequent urination since 2005; continuous urination/waking up 6 times a night urinating and a lot during day/frequent urination; could be a symptom of type 2 diabetic, but he has not had an issue with frequent urination since 2005; continuous urination/waking up 6 times a night urinating and a lot during the day/frequent urination; agitated for a few days/insomnia agitation; insomnia agitation/ sleeping problem that had tapered off; still didn't get proper sleep; felt like he was kind of like on a steroid; he's an asthmatic and was taking steroids and he was having an effect like that for the first week; The initial case was missing the following minimum criteria: unspecified suspect product. Upon receipt of follow-up information on 11Aug2021, this case now contains all required information to be considered valid.  This is a spontaneous report from a contactable consumer (patient himself). A 44-year-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection), via an unspecified route of administration on an unspecified date in May2021 at the age of 44 years old (Batch/Lot number and Expiration date were unknown) as dose 1, single for COVID-19 immunization. The vaccination facility type was not reported; the vaccine was not administered at a facility. Relevant medical history included type 2 diabetic; frequent urination, but has not had an issue with it since 2005; and ongoing asthmatic; all from an unknown date. The patient had no history of previous immunization with the Pfizer vaccine considered as suspect. No additional vaccines were administered on the same date of the Pfizer suspect. The patient had no prior vaccinations within four weeks prior to the first administration date of the suspect vaccine. The patient had no adverse events (AEs) following prior vaccinations. Family medical history relevant to AEs was not provided. The patient was an asthmatic and was taking unspecified steroids for it. The patient initially called to complain about the side effect of the vaccine, and stated that he had experienced continuous urination; stated he had been waking up 6 times a night urinating and a lot during the day; the patient stated he was a type 2 diabetic and knew this could be a symptom of that, but he has not had an issue with frequent urination since 2005. The patient stated this had been happening since the day he got the vaccination in May2021. The patient was also concerned and so was the doctor he spoke with. The patient stated he felt like he was kind of like on a steroid; stated he was really agitated for a few days after the vaccination, but that had resolved. The patient stated he has not had second shot under the doctors care and that was why. The reporter confirmed on 11Aug2021 that the product he received was the Pfizer COVID-19 vaccine. He stated he didn't have his vaccine card with him at the time of the report. He was administered it, just one dose and he had a side effect immediately thereafter and he's still suffering from it since May2021, the same side effect. The patient stated he's having constant urination, well not constant, frequent urination. The patient reported it started immediately after the vaccine in May2021, that night after, he couldn't stop urinating, up to 6 times at night. He reported he still didn't get proper sleep; he didn't know what's going on, it's agitating his bladder and kidneys. The patient also experienced insomnia agitation, further described that he had a sleeping problem, that was the first week (in May2021), that had tapered off, but because of frequent urination, he still didn't get proper sleep. The patient confirmed it began in May2021 and ended in May2021 and had recovered completely to his knowledge. He reported he's an asthmatic and was taking steroids and he was having an effect like that for the first week (in May2021). The AEs did not require a visit to an emergency room, but had a physician office visit; he did talk with his physician about it. The patient had no investigations and relevant tests. The patient had recovered from the events "agitated for a few days/insomnia agitation, sleeping problem that had tapered off, felt like he was kind of like on a steroid, and having an effect like he was asthmatic and was taking steroids" on an unspecified date in May2021, while he was not recovered from the rest of the events.  The lot number for the vaccine, BNT162B2, was not provided and will be requested during follow up.