hospitalized for ovarian cyst that burst; had a seizure last night; sunburn; sunburn in which she could see discoloration of white and red as if she was able to see where the vaccine moved under the skin and where the vaccine was injected and spread; small bubble blisters starting at left arm injection site covering over her breasts and up to right shoulder; felt nauseous for the first 30 minutes after receiving the first dose; This spontaneous case was reported by a consumer and describes the occurrence of OVARIAN CYST RUPTURED (hospitalized for ovarian cyst that burst) and SEIZURE (had a seizure last night) in a 23-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 050C21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Seizure. Concomitant products included ALLERGY MEDICATION.    On 26-Jun-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 26-Jun-2021, the patient experienced SUNBURN (sunburn), VACCINATION SITE DISCOLOURATION (sunburn in which she could see discoloration of white and red as if she was able to see where the vaccine moved under the skin and where the vaccine was injected and spread), BLISTER (small bubble blisters starting at left arm injection site covering over her breasts and up to right shoulder) and NAUSEA (felt nauseous for the first 30 minutes after receiving the first dose). On 28-Jun-2021, the patient experienced OVARIAN CYST RUPTURED (hospitalized for ovarian cyst that burst) (seriousness criteria hospitalization and medically significant). On 01-Jul-2021, the patient experienced SEIZURE (had a seizure last night) (seriousness criterion medically significant). The patient was hospitalized on 28-Jun-2021 due to OVARIAN CYST RUPTURED. The patient was treated with KETOROLAC TROMETHAMINE (TORADOL) for Pain and Ovarian cyst ruptured, at an unspecified dose and frequency. At the time of the report, OVARIAN CYST RUPTURED (hospitalized for ovarian cyst that burst), SEIZURE (had a seizure last night), SUNBURN (sunburn), VACCINATION SITE DISCOLOURATION (sunburn in which she could see discoloration of white and red as if she was able to see where the vaccine moved under the skin and where the vaccine was injected and spread), BLISTER (small bubble blisters starting at left arm injection site covering over her breasts and up to right shoulder) and NAUSEA (felt nauseous for the first 30 minutes after receiving the first dose) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Daily allergy medication was reported as concomitant.  Treatment- After sun burn Aloe Vera and Toradol for ovarian cyst burst pain.  Patient experienced symptoms since receiving first dose of Moderna vaccine. Patient felt nauseous for first 30 minutes after receiving first dose and had an hour drive and went to beach after first dose and got sunburn in which patient could see discoloration of white and red as if was able to see where the vaccine moved under the skin and where the vaccine was injected and spread, small bubble blisters starting at left arm injection site covering over breasts and up to right shoulder area which developed a few hours after being in sun. Patient was hospitalized for an ovarian cyst that burst on 28Jun2021 and had history of seizures and has not had one for about 2 years and says last night 1Jul2021 had a seizure and does not know if it is related to the vaccine or not.   Patient was surgically sterile.  Company comment: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.