Middle toe on right foot developed an ulcer on bottom of toe; Middle toe on right foot developed an ulcer on bottom of toe/toe callused up and the caller dealt with the callus; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient. A 66 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 30Mar2021 (Lot number: ER8732) at the age of 65 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "Nerve surgery" (unspecified if ongoing), notes: caller had some nerve surgery on foot years ago and this nerve was bothering caller in foot. There were no concomitant medications. Vaccination history included: Bnt162b2 (First dose, lot: EN6205, NDC: unknown , Expiration: unknown , Route of administration: left shoulder), administration date: 09Mar2021, when the patient was 65 years old, for Covid-19 immunization.  The following information was reported: SKIN ULCER (non-serious) with onset 30Apr2021, outcome "unknown", described as "Middle toe on right foot developed an ulcer on bottom of toe"; HYPERKERATOSIS (non-serious) with onset 30Apr2021, outcome "unknown", described as "Middle toe on right foot developed an ulcer on bottom of toe/toe callused up and the caller dealt with the callus". The events "middle toe on right foot developed an ulcer on bottom of toe" and "middle toe on right foot developed an ulcer on bottom of toe/toe callused up and the caller dealt with the callus" were evaluated at the physician office visit. Therapeutic measures were taken as a result of skin ulcer, hyperkeratosis.  Additional information: After receiving the second dose Adult Pfizer Covid 19 Vaccine, caller doesn't know how long it was because pushed off onto another issue. Caller reports having middle toe on right foot develop ulcer on bottom of toe. This has been there some time ago and caller has dealt with and gone to several doctor appointments and thinks it wasn't related but kind of odd the ulcer on bottom of toe happened within 30 days of receiving second dose Adult Pfizer Covid 19 Vaccine. The caller clarifies, the caller received the second dose 30Mar2021 and noticed the toe issue by 30Apr2021. The caller thought a piece or glass or something was in the toe. Caller went to doctor and said no glass was in toe. The toe callused up and the caller dealt with the callus. The caller went to another doctor after taking callus off and was sent to wound doctor. Wound doctor said no problem, put ointment on and the ulcer lingered. The ointment did not do any good. Since having this problem with foot, the caller has also had some nerve issue and put some inserts into shoe and soaking and thinks just about got rid of the issues. The caller is not as concerned about this now as the caller was his current situation. The ointment used was Atrac-Tain Cream moisturizing cream which didn't seem like did any good. second dose was given at mid morning or early afternoon, and anatomical location was left shoulder. No Additional Vaccines Administered on Same Date of the Pfizer Suspect If applicable, list all vaccines administered on same date with the Pfizer vaccine considered as suspect. No Prior Vaccinations (within 4 weeks) If applicable, list any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s). No AE(s) following prior vaccinations. Relevant Tests: none.  Follow-up attempts are completed. No further information is expected.