having difficulty breathing,  feels slight constriction in lungs; At this ti me sti ll experiencing hives across the body(though the severity has lessened significantly). feeling a slight constant pain in the area where received the shot, localized soreness In the area where received the shot; feel the skin in the itchy areas becoming inflamed/ears and neck were completely red and enflamed; began to experience itching on  scalp and neck region; ears and neck were completely red and enflamed; This spontaneous case was reported by a consumer and describes the occurrence of PRURITUS (began to experience itching on  scalp and neck region), ERYTHEMA (ears and neck were completely red and enflamed), DYSPNOEA (having diffi cultybreathing,  feels slight constriction in lungs), INFLAMMATION (feel the skin in the itchy areas becoming inflamed/ears and neck were completely red and enflamed) and URTICARIA (At this ti me sti ll experiencing hives across the body(though the severity has lessened signifi cantly).) in a 23-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 033F21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 22-Dec-2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to .25 milliliter. On an unknown date, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 02-Jan-2022, the patient experienced ERYTHEMA (ears and neck were completely red and enflamed). On 02-Jan-2022 at 10:00 PM, the patient experienced PRURITUS (began to experience itching on  scalp and neck region) and INFLAMMATION (feel the skin in the itchy areas becoming inflamed/ears and neck were completely red and enflamed). On an unknown date, the patient experienced DYSPNOEA (having difficulty breathing,  feels slight constriction in lungs), URTICARIA (At this ti me sti ll experiencing hives across the body(though the severity has lessened significantly).) and VACCINATION SITE PAIN (feeling a slight constant pain in the area where received the shot, localized soreness In the area where received the shot). At the time of the report, PRURITUS (began to experience itching on  scalp and neck region), ERYTHEMA (ears and neck were completely red and enflamed), DYSPNOEA (having difficulty breathing,  feels slight constriction in lungs), INFLAMMATION (feel the skin in the itchy areas becoming inflamed/ears and neck were completely red and enflamed) and VACCINATION SITE PAIN (feeling a slight constant pain in the area where received the shot, localized soreness In the area where received the shot) outcome was unknown and URTICARIA (At this ti me sti ll experiencing hives across the body(though the severity has lessened significantly.)had not resolved.  DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Body temperature: 97.7 (abnormal) 97.7F. No concomitant medications were reported. Patient woke up next morning to an even worse reaction than patient was having before. Patient went to see a dermatologist and was prescribed several (unspecified) medications to treat hives. Dermatologist believed that patient may be experiencing a delayed allergic reaction to the proteins present in the booster. Patient have strong belief that my adverse reactions are related to my receiving of the Moderna booster shot.