muscle weakness; spasm; subtle discomfort surrounding injection site; bleeding at injection site; Injection site formed a goose egg; The injection site developed a grouping of samll bumps with pustules that eventually scadded over; Itching at injection site; soreness at the injection site; Headache; Fever; Chills; Injection site was hot to the touch; Feeling tightness in my trapezius muscles; Feeling stiffness in my trapezius muscles,stiffness to right neck &; This spontaneous case was reported by a physician and describes the occurrence of MUSCULAR WEAKNESS (muscle weakness), MUSCLE TIGHTNESS (Feeling tightness in my trapezius muscles), MUSCULOSKELETAL STIFFNESS (Feeling stiffness in my trapezius muscles,stiffness to right neck &), MUSCLE SPASMS (spasm) and VACCINATION SITE WARMTH (Injection site was hot to the touch) in a 71-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 013M20A and 007M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included COVID-19 (2 different occasions in April 2020.) in April 2020.   On 28-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 25-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 25-Feb-2021, the patient experienced MUSCLE TIGHTNESS (Feeling tightness in my trapezius muscles), MUSCULOSKELETAL STIFFNESS (Feeling stiffness in my trapezius muscles,stiffness to right neck &), VACCINATION SITE WARMTH (Injection site was hot to the touch), VACCINATION SITE MASS (Injection site formed a goose egg), VACCINATION SITE PUSTULE (The injection site developed a grouping of samll bumps with pustules that eventually scadded over), VACCINATION SITE PRURITUS (Itching at injection site), VACCINATION SITE PAIN (soreness at the injection site), HEADACHE (Headache), PYREXIA (Fever) and CHILLS (Chills). On an unknown date, the patient experienced MUSCULAR WEAKNESS (muscle weakness), MUSCLE SPASMS (spasm), VACCINATION SITE HAEMORRHAGE (bleeding at injection site) and VACCINATION SITE DISCOMFORT (subtle discomfort surrounding injection site). At the time of the report, MUSCULAR WEAKNESS (muscle weakness), MUSCLE TIGHTNESS (Feeling tightness in my trapezius muscles), MUSCULOSKELETAL STIFFNESS (Feeling stiffness in my trapezius muscles,stiffness to right neck &), MUSCLE SPASMS (spasm), VACCINATION SITE WARMTH (Injection site was hot to the touch), VACCINATION SITE HAEMORRHAGE (bleeding at injection site), VACCINATION SITE MASS (Injection site formed a goose egg), VACCINATION SITE PUSTULE (The injection site developed a grouping of samll bumps with pustules that eventually scadded over), VACCINATION SITE DISCOMFORT (subtle discomfort surrounding injection site), VACCINATION SITE PRURITUS (Itching at injection site), VACCINATION SITE PAIN (soreness at the injection site), HEADACHE (Headache), PYREXIA (Fever) and CHILLS (Chills) outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   No concomitant medications was provided. Patient took treatment medication of NSCID.   Immediately after getting the injection, patient began feeling tightness & stiffness in  trapezius muscles, stiffness to right neck & across her jaw, & across patient's back. The injection site was hot to the touch, sore & formed a goose egg. patient had a headache, fever, chills, & itching at injection site. The injection site developed a group of small bumps with pustules that eventually scabbed over.   This case was linked to MOD-2021-034059, MOD-2021-034126 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 26-May-2021: Significant Follo-Up 3 extra events Added, AE contact information was updated On 20-Jul-2021: Follow-up information received contains non-significant information.