My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; My great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed.; Nail Discoloration Due to hemorrhage; This is a spontaneous report from a contactable consumer or other non hcp (patient).     A 70-year-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Lot Number: EJ168G, Expiry date was not reported), (at the age of 70-year-old) via intramuscular route of administration, administered in Arm Right on 14Jan2021 14:00 as dose 1, second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Lot Number: EL3249, Expiry date was not reported), via intramuscular route of administration, administered in Arm Right on 04Feb2021 13:00 as dose 2, single for COVID-19 immunization at Clinic. Medical history included Hashimotos Thyroiditis from 1980 and ongoing (Pertinent Details- on synthroid daily), Osteoporosis from 2002 and ongoing (Pertinent Details- has Fosamax for 8 yrs.no improvement, now on Reclast IV yearly X 3 doses), Multiple fractures ongoing (Onset Date-last 10 yrs), Basal cell carcinoma from 2009 to an unknown date (Pertinent Details- surgical excision no recurrence), Drug hypersensitivity, Raynaud's Syndrome from an unknown date and unknown if ongoing. Concomitant medications included levothyroxine sodium (SYNTHROID) taken for Hashimotos thyroiditis from an unspecified start date and ongoing. Calcium, colecalciferol (CALCIUM plus VIT D) taken for osteoporosis from an unspecified start date and ongoing. Ascorbic acid (VIT C) taken for an unspecified indication from 2019 and ongoing. Cranberry (CRANBERRY) taken for an unspecified indication from 2020 and ongoing. Ascorbic acid, retinol, tocopherol (OCUVITE (ASCORBIC ACID; RETINOL; TOCOPHEROL)) taken for an unspecified indication from Jan2021 and ongoing. The patient previously took keflex (cefalexin monohydrate), Bac-trim, fosamax and levothyroxine, Lidocaine experienced drug hypersensitivity. Fosamax for 8 yrs for Osteoporosis 2002 ongoing no improvement. On an unspecified date, patient experienced my great toes developed mild swelling, redness, tingling, pain and turned purple under the nail bed, mild swelling, redness, tingling, pain and turned purple under the nail bed and nail discoloration due to hemorrhage. No Prior Vaccinations. The patient underwent lab tests and procedures which included full blood count was normal on 01Feb2021, Platelet count was unknown was unspecified date, sars-cov-2 antibody test was negative on 26Jan2021 as well as on 02Mar2021. The outcome of the event was unknown.    No follow-up attempts are possible. No further information is expected.