developed a raised rash on his skin that is like "poison ivy" but those areas do not itch, they are painful.; developed a raised rash on his skin that is like "poison ivy" but those areas do not itch, they are painful.; feel as though "something is eating the inside of his skin"; pain in his arm; It started itching he states and it is under his skin; The pain started to spread to the middle of his chest and back.; The pain started to spread to the middle of his chest and back.; feels like a bruise under his skin, like a "deep bruise."/muscle bruise/it was "almost like a bruise on my shoulder."; allergic reaction; This is a spontaneous report from a contactable consumer (patient). A 46-year-old male patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; lot number: EW0161), via an unspecified route of administration on 16May2021 10:00 (at the age of 46-years-old) at dose 2, single in the left arm for COVID-19 immunization. The patient's medical history was reported as none. The patient's concomitant medications were not reported. No family history relevant to the adverse events reported and no prior vaccinations (within 4 weeks). Historical vaccine included the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; lot number: EW015, expiration date: unknown) received on 25Apr2021 (at the age of 46-years-old) in the left arm for COVID-19 immunization. On 19May2021, the patient experienced pain in arm. This pain started to spread to the middle of his chest and back on 19May2021. The patient felt like something was eating the inside of his skin. These concerns started out when the patient described a muscle bruise then slowly started to spread, although it did not spread fast. The patient said that it was almost like a bruise on his shoulder and over the last 2 weeks, it has really accelerated. It started itching on 19May2021 and stated that it was under his skin. Further stated that it felt like a bruise under his skin, like a deep bruise. On the same day, on 19May2021, the patient developed a raised rash on his skin that was like poison ivy but those areas do not itch, they were painful. The patient stated that it feels like something was eating the inside of his skin. The patient went to his doctor due to the events and stated that the symptoms were allergic reaction. The patient was given a course of prednisone which the patient noted that it did nothing for his symptoms. The patient has a follow-up appointment schedules for tomorrow with healthcare professional. The patient stated that the pains he experienced wasn't that bad, but two days after, the pain started to feel tender, felt like a bruise. It wasn't hard like the typical shot could be. The patient stated that the pains are getting worse and grows daily. The rash looks like rash with raised skin and it hurts. It was spotty in different places on the caller's back and under the arm. The rash was getting worse and kind of itches, but it hurts more than it itches. On an unspecified date, the patient underwent CAT scan (unknown result) and blood work (high triglycerides). Outcome of the events was not recovered.  Follow-up attempts are completed. No further information is expected.