Head pressure; Sensitive skin to sunlight; Pressure behind eyes; Inner head/ear vibrations; shoulder and neck pain; shoulder and neck pain; Vision problems; Headache; Entire right side of body shaking and twitching; Entire right side of body shaking and twitching; rapid heart beat and trouble breathing minutes after only first shot; rapid heart beat and trouble breathing minutes after only first shot; Can't focus; Light headed/ dizzy even while sitting; Tired; This spontaneous case was reported by a consumer and describes the occurrence of DISTURBANCE IN ATTENTION (Can't focus), DIZZINESS (Light headed/ dizzy even while sitting), HEAD DISCOMFORT (Head pressure), TACHYCARDIA (rapid heart beat and trouble breathing minutes after only first shot) and DYSPNOEA (rapid heart beat and trouble breathing minutes after only first shot) in a 39-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 045A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Drug allergy (Allergy to sulfa drugs).   On 23-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to .5 ml. On an unknown date, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) at an unspecified dose. On 23-Mar-2021, the patient experienced DISTURBANCE IN ATTENTION (Can't focus), DIZZINESS (Light headed/ dizzy even while sitting), TACHYCARDIA (rapid heart beat and trouble breathing minutes after only first shot), DYSPNOEA (rapid heart beat and trouble breathing minutes after only first shot) and FATIGUE (Tired). On 24-Mar-2021, the patient experienced TREMOR (Entire right side of body shaking and twitching) and MUSCLE TWITCHING (Entire right side of body shaking and twitching). On 25-Mar-2021, the patient experienced VISUAL IMPAIRMENT (Vision problems) and HEADACHE (Headache). On an unknown date, the patient experienced HEAD DISCOMFORT (Head pressure), PHOTOSENSITIVITY REACTION (Sensitive skin to sunlight), OCULAR DISCOMFORT (Pressure behind eyes), EAR DISCOMFORT (Inner head/ear vibrations), NECK PAIN (shoulder and neck pain) and ARTHRALGIA (shoulder and neck pain). The patient was treated with IBUPROFEN (ADVILCAPS) at a dose of 1 dosage form; PARACETAMOL (TYLENOL) at a dose of 1 dosage form; DIAZEPAM (VALIUM) at a dose of 1 dosage form; PREDNISONE at a dose of 1 dosage form and DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at a dose of 1 dosage form. On 25-Mar-2021, FATIGUE (Tired) had resolved. At the time of the report, DISTURBANCE IN ATTENTION (Can't focus), PHOTOSENSITIVITY REACTION (Sensitive skin to sunlight), NECK PAIN (shoulder and neck pain) and ARTHRALGIA (shoulder and neck pain) outcome was unknown, DIZZINESS (Light headed/ dizzy even while sitting), HEAD DISCOMFORT (Head pressure), VISUAL IMPAIRMENT (Vision problems), OCULAR DISCOMFORT (Pressure behind eyes), EAR DISCOMFORT (Inner head/ear vibrations) and HEADACHE (Headache) had not resolved and TACHYCARDIA (rapid heart beat and trouble breathing minutes after only first shot), DYSPNOEA (rapid heart beat and trouble breathing minutes after only first shot), TREMOR (Entire right side of body shaking and twitching) and MUSCLE TWITCHING (Entire right side of body shaking and twitching) had resolved with sequelae.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 23-Mar-2021, Heart rate: abnormal (abnormal) abnormal.         No concomitant medications were reported.   This case was linked to MOD-2021-250915 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 12-May-2021: Follow-up received, added treatment details. Updated patient initials and event outcome. On 07-Jul-2021: Added other relevant history, Added treatment medications, Added second dose start date, Added events, updated event outcome.