neuropathy; all of a sudden could not catch breath/all of a sudden could not breath well/starts to clean, could not catch breath; started losing balance; had trouble walking/got up, felt like she would fall over/not being able to walk/when walking, felt like she would fall; legs from  knees down turned red; feet started discoloring; feet got cold and numb; terrible pain in legs; cannot sleep; feet got cold and numb; This spontaneous case was reported by a consumer and describes the occurrence of NEUROPATHY PERIPHERAL (neuropathy), DYSPNOEA (all of a sudden could not catch breath/all of a sudden could not breath well/starts to clean, could not catch breath), BALANCE DISORDER (started losing balance), GAIT DISTURBANCE (had trouble walking/got up, felt like she would fall over/not being able to walk/when walking, felt like she would fall) and ERYTHEMA (legs from  knees down turned red) in a 78-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 028A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Mitral valve prolapse (50 years ago). Concurrent medical conditions included Hypertension, Asthma, Bronchitis and Cholesterol.    On 30-Mar-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, the patient experienced NEUROPATHY PERIPHERAL (neuropathy), DYSPNOEA (all of a sudden could not catch breath/all of a sudden could not breath well/starts to clean, could not catch breath), BALANCE DISORDER (started losing balance), GAIT DISTURBANCE (had trouble walking/got up, felt like she would fall over/not being able to walk/when walking, felt like she would fall), ERYTHEMA (legs from  knees down turned red), SKIN DISCOLOURATION (feet started discoloring), PERIPHERAL COLDNESS (feet got cold and numb), PAIN IN EXTREMITY (terrible pain in legs), INSOMNIA (cannot sleep) and HYPOAESTHESIA (feet got cold and numb). The patient was treated with FLUTICASONE FUROATE, UMECLIDINIUM BROMIDE, VILANTEROL TRIFENATATE (TRELEGY) for Breathing difficult, at an unspecified dose and frequency; UMECLIDINIUM BROMIDE, VILANTEROL TRIFENATATE (ANORO ELLIPTA) for Breathing difficult, at an unspecified dose and frequency; GABAPENTIN for Sleep difficult, at a dose of 300 mg and GABAPENTIN for Sleep difficult, at a dose of 100 mg. At the time of the report, NEUROPATHY PERIPHERAL (neuropathy), DYSPNOEA (all of a sudden could not catch breath/all of a sudden could not breath well/starts to clean, could not catch breath), BALANCE DISORDER (started losing balance), GAIT DISTURBANCE (had trouble walking/got up, felt like she would fall over/not being able to walk/when walking, felt like she would fall), ERYTHEMA (legs from  knees down turned red), SKIN DISCOLOURATION (feet started discoloring), PERIPHERAL COLDNESS (feet got cold and numb), PAIN IN EXTREMITY (terrible pain in legs), INSOMNIA (cannot sleep) and HYPOAESTHESIA (feet got cold and numb) outcome was unknown.            It was reported that the patient was having adverse effects started after 3 weeks of vaccination, her internist, neurologist, pulmonary doctor and cardiologist all agreed based on the process of elimination, that her events are happened due to vaccine.  Treatment includes a Neuropathy medication after the diagnosis, the medication was also for seizures. Concomitant medication includes: High blood pressure medication and Cholesterol medication not specified.  The reporter mentioned a nerve conduction test but no date was provided.