My arm was almost doubled in size; Arm Pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder; Muscle pain; My fingertips my pointer and my thumb I feel pins and needles; Arm Pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder; My fingertips my pointer and my thumb I feel pins and needles; Arm Pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 42 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 30Oct2021 12:00 (Lot number: 320308D) at the age of 42 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "car accident", start date: Apr2021 (unspecified if ongoing), notes: car accident. There were no concomitant medications. Vaccination history included: Flu shot (last time I took a Flu shot it was 6 months ago, so I am not about shots.), administration date: 2021, for immunization. The following information was reported: PERIPHERAL SWELLING (non-serious) with onset 31Oct2021, outcome "recovering", described as "My arm was almost doubled in size"; PAIN IN EXTREMITY (non-serious), ARTHRALGIA (non-serious) all with onset 2021, outcome "not recovered" and all described as "Arm Pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder"; NEURALGIA (non-serious) with onset 31Oct2021, outcome "not recovered", PARAESTHESIA (non-serious), PAIN (non-serious) all with onset 2021, outcome "unknown" and all described as "My fingertips my pointer and my thumb I feel pins and needles"; MYALGIA (non-serious) with onset 31Oct2021, outcome "not recovered", described as "Muscle pain". The events "my arm was almost doubled in size", "arm pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder", "arm pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder", "arm pain which hitting nerve, affecting neck shoulder trap, lateral basically everything that has to do with shoulder", "my fingertips my pointer and my thumb i feel pins and needles", "muscle pain" and "my fingertips my pointer and my thumb i feel pins and needles" were evaluated at the physician office visit. Therapeutic measures were taken as a result of peripheral swelling, pain in extremity, neuralgia, arthralgia, paraesthesia, myalgia, pain.  Additional information: arm was swollen for about 2 and a half weeks just 2-3 days went down but have this annoying pain on arm which is hitting a nerve, so it affecting neck shoulder trap, lateral like basically everything that has to do with shoulder. And then fingertips pointer and thumb feel pins and needles, so he know its hitting the nerve. just going through this pain but this swelling went down, this pain is not going away. Its hitting up the part of arm where it is affecting his whole arm and neck, so say if he turn his face to the right and then he try to extend his arm to the left excruciating pain its hitting the nerve in that area right where shoulder blade and trap is. had muscle pain and the swelling happened the day after. the next day arm started getting swollen it was basically by the end of the week arm was almost doubled in size, he was soaking the hot and cold water, he is not that irritable, so he tried soaking with cold and hot water besides that important. he have to do with liquid, the watery hot or watery cold works better that the actual using a hot compress or using an ice compress (treatment). Pressure on the nerve all the way to the two fingers, thumb and pointer, goes to shoulder, bicep, tricep and trap: was taking antiinflammatory from doctor. had to see somebody and was taking methylprednisolone 4mg dose pack. took Methylprednisolone 4mg dose pack first and it was working. The medication ended shortly, only 6 days of taking the Methylprednisolone. doctor was on vacation. Prednisone: Another doctor gave the caller another medication that did not do anything. states the other medication that did not do anything was prednisone 5mg tablets. Methylprednisolone: The caller finished the Methylprednisolone and that was helping. The caller states he started taking Methylprednisolone 5 or 6 weeks after the caller was already in pain. thought the pain was going to subside. The caller doesn't take flu shots or anything like that. No prior vaccination within four weeks.    No follow-up attempts are possible. No further information is expected.