itching; malaise; little purples spots on her arms and legs; rash from head to toe which was mildly itchy and resembling a heat rash or contact dermatitis; fatigue; intermittent headache; burning sensation; hives; it felt like a sunburn; rash on her bilateral armpits and forearms which was hot to touch and itchy; This spontaneous case was reported by a nurse and describes the occurrence of RASH (rash on her bilateral armpits and forearms which was hot to touch and itchy), BURNING SENSATION (burning sensation), URTICARIA (hives), SUNBURN (it felt like a sunburn) and PRURITUS (itching) in a 66-year-old female elderly exposed to mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 012A21A) , while the parent received the product for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Thrombocytopenic purpura. Concomitant product exposures included OMEPRAZOLE, PROPRANOLOL (PROPANOLOL [PROPRANOLOL]), TEMAZEPAM, GUSELKUMAB (TREMFYA) and TRIAMCINOLONE ACETONIDE for an unknown indication.    On 26-Feb-2021 at 12:39 PM, the parent received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. Last menstrual period and estimated date of delivery were not provided. On 26-Feb-2021, the elderly was diagnosed with RASH (rash on her bilateral armpits and forearms which was hot to touch and itchy), BURNING SENSATION (burning sensation), URTICARIA (hives) and SUNBURN (it felt like a sunburn). On 04-Mar-2021, the elderly was diagnosed with PRURITUS (itching), MALAISE (malaise), FATIGUE (fatigue), HEADACHE (intermittent headache), RASH (rash from head to toe which was mildly itchy and resembling a heat rash or contact dermatitis) and PIGMENTATION DISORDER (little purples spots on her arms and legs). The Elderly was exposed to mRNA-1273 (Moderna COVID-19 Vaccine) during pregnancy.  The elderly was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at an unspecified dose and frequency and CORTISONE at an unspecified dose and frequency. On 06-Mar-2021, RASH (rash on her bilateral armpits and forearms which was hot to touch and itchy), BURNING SENSATION (burning sensation), SUNBURN (it felt like a sunburn), PRURITUS (itching), MALAISE (malaise), FATIGUE (fatigue), HEADACHE (intermittent headache), RASH (rash from head to toe which was mildly itchy and resembling a heat rash or contact dermatitis) and PIGMENTATION DISORDER (little purples spots on her arms and legs) had resolved. On 26-Mar-2021, URTICARIA (hives) had resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Platelet count: 60 60.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter considered RASH (rash on her bilateral armpits and forearms which was hot to touch and itchy), BURNING SENSATION (burning sensation), URTICARIA (hives), SUNBURN (it felt like a sunburn), PRURITUS (itching), MALAISE (malaise), FATIGUE (fatigue), HEADACHE (intermittent headache), RASH (rash from head to toe which was mildly itchy and resembling a heat rash or contact dermatitis) and PIGMENTATION DISORDER (little purples spots on her arms and legs) to be related.    Most recent FOLLOW-UP information incorporated above includes: On 12-May-2021: The follow up received on 12-MAY-2021.Concomittant medications were added. Dosage route of administration is added. Race information is updated.