Allergic reaction; Unsteady vertigo and dizziness out of their head all in her left side; Unsteady vertigo and dizziness out of their head all in her left side; tongue became very thick; A big red warm circle appeared on her left arm far went down the injection site which the patient described as hot to touch; Tongue felt thick; This spontaneous case was reported by an other health care professional and describes the occurrence of SWOLLEN TONGUE (Tongue felt thick), SWOLLEN TONGUE (tongue became very thick), VACCINATION SITE WARMTH (A big red warm circle appeared on her left arm far went down the injection site which the patient described as hot to touch), VERTIGO (Unsteady vertigo and dizziness out of their head all in her left side) and DIZZINESS (Unsteady vertigo and dizziness out of their head all in her left side) in a 53-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 039k20a and 025j20a) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Allergy NOS. Concomitant products included CETIRIZINE HYDROCHLORIDE (ZYRTEC ALLERGY) for Allergy, HYDROCHLOROTHIAZIDE, LISINOPRIL (LISINOPRIL HCTZ) for an unknown indication.   On 04-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 01-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 03-Feb-2021,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced SWOLLEN TONGUE (Tongue felt thick). On 04-Feb-2021, the patient experienced SWOLLEN TONGUE (tongue became very thick) and VACCINATION SITE WARMTH (A big red warm circle appeared on her left arm far went down the injection site which the patient described as hot to touch). On 11-Feb-2021, the patient experienced VERTIGO (Unsteady vertigo and dizziness out of their head all in her left side) and DIZZINESS (Unsteady vertigo and dizziness out of their head all in her left side). On an unknown date, the patient experienced HYPERSENSITIVITY (Allergic reaction). The patient was treated with PREDNISONE for Adverse event, at a dose of 1 dosage form; MECLIZINE HCL for Adverse event, at a dose of 1 dosage form and Physical therapy (Exercises) for Vertigo. On 11-Feb-2021, SWOLLEN TONGUE (Tongue felt thick), SWOLLEN TONGUE (tongue became very thick) and VACCINATION SITE WARMTH (A big red warm circle appeared on her left arm far went down the injection site which the patient described as hot to touch) had resolved. At the time of the report, VERTIGO (Unsteady vertigo and dizziness out of their head all in her left side) and DIZZINESS (Unsteady vertigo and dizziness out of their head all in her left side) had not resolved and HYPERSENSITIVITY (Allergic reaction) had resolved.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Meclizine made the patient tired and did not help with any symptoms. Flonase in her nose was administered as treatment drug also did not help with symptoms.  Patient stated that she never got COVID-19 but was exposed to it several times   Most recent FOLLOW-UP information incorporated above includes: On 13-Dec-2021: Follow up received, contains non significant information ,e-mail updated.