Heaviness; fatigue; pain on her left arm; Two small lumps appeared on the patient's arm, one near the injection site and another one on the forearm; veins started to stick up and turned purple; Two small lumps appeared on the patient's arm, one on the forearm; contractions in the lower arm; numbness in the upper arm; not being able to close a hand; This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE MASS (Two small lumps appeared on the patient's arm, one near the injection site and another one on the forearm), SUPERFICIAL VEIN PROMINENCE (veins started to stick up and turned purple), LIMB MASS (Two small lumps appeared on the patient's arm, one on the forearm), MUSCLE CONTRACTIONS INVOLUNTARY (contractions in the lower arm) and HYPOAESTHESIA (numbness in the upper arm) in a 35-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 078c21a) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 29-Jun-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 29-Jun-2021, the patient experienced VACCINATION SITE MASS (Two small lumps appeared on the patient's arm, one near the injection site and another one on the forearm), SUPERFICIAL VEIN PROMINENCE (veins started to stick up and turned purple), LIMB MASS (Two small lumps appeared on the patient's arm, one on the forearm), MUSCLE CONTRACTIONS INVOLUNTARY (contractions in the lower arm), HYPOAESTHESIA (numbness in the upper arm), MOBILITY DECREASED (not being able to close a hand), FATIGUE (fatigue) and VACCINATION SITE PAIN (pain on her left arm). On an unknown date, the patient experienced LIMB DISCOMFORT (Heaviness). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL) at an unspecified dose and frequency. On 30-Jun-2021, VACCINATION SITE MASS (Two small lumps appeared on the patient's arm, one near the injection site and another one on the forearm), SUPERFICIAL VEIN PROMINENCE (veins started to stick up and turned purple), MUSCLE CONTRACTIONS INVOLUNTARY (contractions in the lower arm), HYPOAESTHESIA (numbness in the upper arm), MOBILITY DECREASED (not being able to close a hand), LIMB DISCOMFORT (Heaviness) and FATIGUE (fatigue) had resolved. At the time of the report, LIMB MASS (Two small lumps appeared on the patient's arm, one on the forearm) and VACCINATION SITE PAIN (pain on her left arm) had not resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       The patient started to experience a lot of pain on her left arm, numbness in the upper arm and contractions in the lower arm. The patient couldn't close her hand and her veins started to stick up and turned purple, two small lumps appeared on the patient's arm, one near the injection site and another one on the forearm Another HCP, an acquaintance of the patient, told the reporter  that the patient could have experienced a heart attack. No Concomitant medications was reported by the reporter On 30-JUN aspirin was recommended by the caller, the patient`s partner, a consumer.