Itchy face,Itchy scalp,itchy nose; Delayed reaction; Feeling sick; Red spot adjacent and below to the injection site warm to touch; Red spot adjacent and below to the injection site itchy; Red spot adjacent and below to the injection site hard area under the skin; Red spot adjacent and below injection site, two inches in diameter; Unable to control blood sugar; dizzy,put head between legs,not feeling myself; immune system under attack; This spontaneous case was reported by a consumer and describes the occurrence of BLOOD GLUCOSE FLUCTUATION (Unable to control blood sugar), DIZZINESS (dizzy,put head between legs,not feeling myself), IMMUNE SYSTEM DISORDER (immune system under attack), ADVERSE REACTION (Delayed reaction) and VACCINATION COMPLICATION (Feeling sick) in a 70-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 024M0A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Mastectomy. Concurrent medical conditions included Diabetes (Controls her diabetes through diet. Patient is able to keep her blood sugar levels between 115-123.), Penicillin allergy and Allergy (venom from yellowjacket bees).    On 10-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 10-Feb-2021, the patient experienced BLOOD GLUCOSE FLUCTUATION (Unable to control blood sugar), DIZZINESS (dizzy,put head between legs,not feeling myself) and IMMUNE SYSTEM DISORDER (immune system under attack). On 11-Feb-2021, the patient experienced VACCINATION SITE WARMTH (Red spot adjacent and below to the injection site warm to touch), VACCINATION SITE PRURITUS (Red spot adjacent and below to the injection site itchy), VACCINATION SITE INDURATION (Red spot adjacent and below to the injection site hard area under the skin) and VACCINATION SITE ERYTHEMA (Red spot adjacent and below injection site, two inches in diameter). On 17-Feb-2021, the patient experienced ADVERSE REACTION (Delayed reaction) and VACCINATION COMPLICATION (Feeling sick). On 19-Feb-2021, the patient experienced PRURITUS (Itchy face,Itchy scalp,itchy nose). At the time of the report, BLOOD GLUCOSE FLUCTUATION (Unable to control blood sugar), DIZZINESS (dizzy,put head between legs,not feeling myself), IMMUNE SYSTEM DISORDER (immune system under attack), ADVERSE REACTION (Delayed reaction), VACCINATION COMPLICATION (Feeling sick), PRURITUS (Itchy face,Itchy scalp,itchy nose), VACCINATION SITE WARMTH (Red spot adjacent and below to the injection site warm to touch), VACCINATION SITE PRURITUS (Red spot adjacent and below to the injection site itchy), VACCINATION SITE INDURATION (Red spot adjacent and below to the injection site hard area under the skin) and VACCINATION SITE ERYTHEMA (Red spot adjacent and below injection site, two inches in diameter) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 26-Feb-2021, Blood glucose increased: 153 (High) At the time of the call patient stated her blood sugar was 153, 201 (High) It was 201 first thing in the morning and 115 (Inconclusive) Patient ate an hour ago - had rice cake, salmon, lettuce, and a sip of juice. Patient stated her sugar was 115 before she ate.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Concomitant medication list was not provided. Treatment information was not provided.   This case was linked to MOD-2021-280334.   Most recent FOLLOW-UP information incorporated above includes: On 29-Apr-2021: Email info updated On 07-Aug-2021: NNI