I had extreme leg cramps; Then I started having the worst diarrhea; extreme stomach pain; my testicals  were swollen and sore.; my testicals  were swollen and sore.; My whole body was super red with hives; My whole body was super red with hives; I was itching from head to toe; my lips were blue; felt like someone was squeezing my heart; i fixed a ham and cheese sandwich for dinner and had a bad allergic reaction; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 32 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 02Sep2021 09:30 (Batch/Lot number: unknown) at the age of 32 years as dose 1, single for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: MUSCLE SPASMS (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "I had extreme leg cramps"; DIARRHOEA (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "Then I started having the worst diarrhea"; ABDOMINAL PAIN UPPER (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "extreme stomach pain"; TESTICULAR SWELLING (non-serious), TESTICULAR PAIN (non-serious) all with onset 05Sep2021 17:00, outcome "recovering" and all described as "my testicals  were swollen and sore."; ERYTHEMA (non-serious), URTICARIA (non-serious) all with onset 05Sep2021 17:00, outcome "recovering" and all described as "My whole body was super red with hives"; PRURITUS (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "I was itching from head to toe"; CYANOSIS (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "my lips were blue"; CARDIAC DISCOMFORT (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "felt like someone was squeezing my heart"; FOOD ALLERGY (non-serious) with onset 05Sep2021 17:00, outcome "recovering", described as "i fixed a ham and cheese sandwich for dinner and had a bad allergic reaction". Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: No other vaccine in four weeks. 3 days after the shot the patient had extreme leg cramps. Then started having the worst diarrhea the patient had ever experienced and extreme stomach pain. And his testicals were swollen and sore. And the extreme diarrhea last about 4 days. But the testicals stayed sore and swollen for about 8 days. Then he fixed a ham and cheese sandwich for dinner and had a bad allergic reaction. He had never had an allergic reaction to any food in my life. And he ate ham and cheese sandwiches a lot at least 3 times a week. And it was the exact brand of ingredients he had used for years. His whole body was super red with hives. He was itching from head to toe. And his lips were blue. And it felt like someone was squeezing his heart. No covid prior vaccination. No Known allergies. Patient not administered other vaccine in four weeks. Patient not had Covid prior vaccination; Patient was tested Covid post vaccination. Patient underwent lab tests and procedures which included SARS-CoV-2 test: (unknown result) post vaccination.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.