headache; unable to maintain an erection/ some issues with maintaining an erection; soreness in his arms/ soreness was on both shoulders; real soreness" in his arm where he got the injection/ injection site had pain; developed a "large lymph node under that arm", which he "feels internally"/ lymph node he could feel internally/ internal bone like pain; This is a spontaneous report from a contactable consumer (patient). A 50-year-old male patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), second dose via an unspecified route of administration on 31Mar2021 (Batch/Lot number was not reported) as SINGLE DOSE at the arm right (reported as right shoulder) for covid-19 immunisation (reported as he is trying to avoid serious illness). The patient medical history includes sleep from unknown date and if ongoing. Concomitant medication included zolpidem (reported as generic ambien) taken for sleep, start and stop date were not reported and added that he has been taking it for years but he hasn't taking it since he got the vaccine but thinks he took it the day before. The patient previously took bnt162b2 first dose on 10Mar2021 (roughly two weeks before the second dose) at the left shoulder for covid-19 immunisation. It was reported that the patient had no reaction to the first dose of the Pfizer-BioNTech COVID-19 vaccine, and he received the second dose on 31Mar2021. He explained following the second dose, his first issue was a "headache", then he had "real soreness" in his arm where he got the injection. He added he developed a "large lymph node under that arm", which he "feels internally". He specified he still feels it a week later. He also explained he is "unable to maintain an erection". He described himself as "athletic" and specified not having erectile problem in the past. He asked if his current symptoms have been reported as side effect to the vaccine. It was also added that after the second dose he appeared to have some issues with maintaining an erection on 04Apr2021. It was stated he is fairly active with a muscular build and could be a result after an exercise injury but this did happen after his second shot. Caller states he also had soreness in his arms and an enlarged lymph node under his arm that he could feel with his hand but that went away yesterday (from 01Apr2021 to 07Apr20210). The soreness was on both shoulders but he thinks the soreness on the other shoulder is from lifting weights and the shoulder from the injection site had pain, internal bone like pain (from 01Apr2021 to 07Apr20210). It was stated that the lymph node he could feel internally but didn't protrude through skin and went away yesterday and lasted 6-7 days. It was also reported that the soreness and lymph node went away yesterday and believes everything will get back to normal, he expected soreness to last a couple of days and it lasted a week. The patient stated he took some sleep medication after the second injection. He doesn't remember if it was the night before the injection. He took Ambien, a higher dosage. States maybe issues with maintaining an erection are beginning to improve. It was also stated the soreness and lymph node he noticed it the day after the injection, by the evening of 01Apr2021 and as of yesterday 07Apr2021 evening it feels like its completely back to normal. It was noted for the treatment that he didn't take anything but bought a gripper where he squeezes it and builds strength in his hands to give him some relief. The patient added that he's pretty active, he works out 4-5 days a week, including running. The outcome of the event some issues with maintaining an erection/ unable to maintain an erection was recovering; for the event headache was unknown, for all other events was recovered on 07Apr2021.  Information about the Lot/batch number has been requested.