rash on left hand; This spontaneous case was reported by a consumer and describes the occurrence of RASH (rash on left hand) in a 74-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 012M20A) for COVID-19 vaccination.     The patient's past medical history included Hives (hives/urticaria). Concurrent medical conditions included Depression, Anxiety, Overactive bladder and High cholesterol. Concomitant products included CALCIUM CARBONATE, FAMOTIDINE, MAGNESIUM HYDROXIDE (PEPCID COMPLETE) for Acid reflux (esophageal), QUETIAPINE FUMARATE (SEROQUEL), VENLAFAXINE HYDROCHLORIDE (EFFEXOR), ATORVASTATIN CALCIUM (LIPITOR), MIRABEGRON (MYRBETRIQ) from 06-Feb-2021 to an unknown date, CALCIUM CITRATE, VITAMIN B12 [VITAMIN B12 NOS], LINUM USITATISSIMUM SEED OIL (FLAX SEED OIL), VITAMIN D [VITAMIN D NOS], MAGNESIUM OXIDE, LUTEIN [XANTOFYL], MESO ZEAXANTHIN, ZEAXANTHIN from 14-Nov-2020 to an unknown date and SOLIFENACIN SUCCINATE (VESICARE) for an unknown indication.    On 10-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 12-Feb-2021, the patient experienced RASH (rash on left hand). The patient was treated with PREDNISONE ongoing from 30-Jun-2021 for Adverse event, at a dose of 10 mg on sliding scale for a month and TRIAMCINOLONE for Adverse event, at a dose of 1 dosage form. At the time of the report, RASH (rash on left hand) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 26-Apr-2021, Biopsy: abnormal (abnormal) Lichenoid interface dermatitis with many dermal eosinophils was noted; favor drug reaction over lichen planus. On 30-Jun-2021, Physical examination: abnormal (abnormal) A cutaneous examination of rash on the back, upper extremities, lower extremities, hands, feet, abdomen, chest, and neck reveals the following significant findings: a number of pink to violaceous papules of the low back, L dorsal hand, abdomen umbilicus, and inframammary area, some were in a linear arrangement. Also on the proximal thighs there was larger pink to viola plaques with an overlying white-ish scale. No involvement of the interwebs. ddx: scabies given linearity however unlikely due to complete lack of pruritus, favor hypersensitivity given proximity to vaccination and lack of pruritus. Organic lichenoid reaction might be expected to be itchier, eos favor drug reaction. On an unknown date, Blood pressure measurement: 165/82 mmhg (High) 165/82 mmHg. On an unknown date, Body temperature: 98.8 degree fahrenheit (normal) 98.8 degree Fahrenheit.     mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosing remained unchanged.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Macu health is the other concomitant medication reported by reporter. After physical examination, the doctor prescribed prednisone starting at 50mg daily for 4 days, then taper by decreasing 10 mg every 4 days   This case was linked to MOD-2021-169632 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 07-Jul-2021: Significant follow up received contains patient demographics, past medical history, lab data, 2nd dose was taken on 10MAR2021, treatment medication Prednisone and event outcome for rash is not recovered.