off balance; I could not move my head, body, or open my eyes during each episode.; Uncontrollable spasms in head; head started spinning out of control; felt like a twist on their head, like a twitch in a muscle; severe dizziness; Sweating; Dry heaving; nauseated; been having headaches all this days; could not move the arm for 2 days,it was realy sore; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of BALANCE DISORDER (off balance), DIZZINESS (severe dizziness), VERTIGO (head started spinning out of control), MUSCLE TWITCHING (felt like a twist on their head, like a twitch in a muscle) and MUSCLE SPASMS (Uncontrollable spasms in head) in a 61-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 007M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Irritable bowel syndrome since 1975, Migraine since 1995, GERD (Recent changes took place in this chronic condition) since 2000, Drug allergy (codeine), Food allergy (Onions), Blood sugar decreased, Low blood pressure, Drug allergy (Epinephrine), Food allergy (Garlic) and Dairy intolerance (some dairy).    On 01-Feb-2021 at 3:15 PM, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 01-Feb-2021, the patient experienced PAIN IN EXTREMITY (could not move the arm for 2 days,it was realy sore). On 03-Feb-2021, the patient experienced DIZZINESS (severe dizziness), MUSCLE TWITCHING (felt like a twist on their head, like a twitch in a muscle), HYPERHIDROSIS (Sweating), RETCHING (Dry heaving), NAUSEA (nauseated) and HEADACHE (been having headaches all this days). On 03-Feb-2021 at 7:20 AM, the patient experienced VERTIGO (head started spinning out of control). 03-Feb-2021 at 7:20 AM, the patient experienced MUSCLE SPASMS (Uncontrollable spasms in head). On an unknown date, the patient experienced BALANCE DISORDER (off balance) and MOVEMENT DISORDER (I could not move my head, body, or open my eyes during each episode.). The patient was treated with MECLIZINE [MECLOZINE] for Dizziness, at an unspecified dose and frequency and ONDANSETRON HYDROCHLORIDE (ZOFRAN [ONDANSETRON HYDROCHLORIDE]) for Nausea, at an unspecified dose and frequency. On 04-Feb-2021, PAIN IN EXTREMITY (could not move the arm for 2 days,it was realy sore) had resolved. At the time of the report, BALANCE DISORDER (off balance), VERTIGO (head started spinning out of control), MUSCLE TWITCHING (felt like a twist on their head, like a twitch in a muscle), MUSCLE SPASMS (Uncontrollable spasms in head), HYPERHIDROSIS (Sweating), MOVEMENT DISORDER (I could not move my head, body, or open my eyes during each episode.), RETCHING (Dry heaving) and NAUSEA (nauseated) had resolved, DIZZINESS (severe dizziness) had resolved with sequelae and HEADACHE (been having headaches all this days) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): In February 2021, Angiogram: normal (normal) normal. In February 2021, Magnetic resonance imaging head: normal (normal) normal.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       Concomitant medications also included unspecified medications for low blood sugar and low blood pressure.  It was reported that the patient experienced spasms in head followed by head spinning and dizziness in episodes lasting 4 hours. The pain experienced during each episode was described as painful pulling and twisting motion on top-middle of her head. The patient experienced this until 10:30 AM when paramedics arrived and took her to the hospital.   The patient reported still experiencing slight dizziness and headache occasionally 5 months after vaccination.   Most recent FOLLOW-UP information incorporated above includes: On 08-May-2021: Follow-up received provided patient history, suspect dosage details and event details with outcome. On 02-Jul-2021: Follow-up received updated event outcome.