Arm  is heavy/ left arm never felt the same after the second shot of Moderna Covid-19 vaccine; arm is heavy and hard to lift / difficult to raise arm/it almost hurts to lift their arm and it hurts to reach the staff from top shelf; both shots made me sick; dull ache deep in the bone; occasional pain in  my right shoulder; pretty painful at times and "keeps me up at night"/ dull ache deep in the bone where the shot was given that sometimes radiates from to the shoulder; Pain in arm; development of arthritis in shoulder/pain moved up and down  the arm and evolved into a sever arthritic reaction/pain feels almost arthritic as if somebody punched me lasting for 2 months; This spontaneous case was reported by a consumer and describes the occurrence of LIMB DISCOMFORT (Arm  is heavy/ left arm never felt the same after the second shot of Moderna Covid-19 vaccine), MOBILITY DECREASED (arm is heavy and hard to lift / difficult to raise arm/it almost hurts to lift their arm and it hurts to reach the staff from top shelf), ILLNESS (both shots made me sick), BONE PAIN (dull ache deep in the bone) and PAIN IN EXTREMITY (Pain in arm) in a 68-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 001B21A and 001A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History was Provided by Reporter.  Concomitant products included EMTRICITABINE, TENOFOVIR ALAFENAMIDE FUMARATE (DESCOVY) for HIV disease, SILDENAFIL CITRATE (VIAGRA) for an unknown indication.   On 23-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 23-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 24-Mar-2021, the patient experienced PAIN IN EXTREMITY (Pain in arm) and ARTHRITIS (development of arthritis in shoulder/pain moved up and down  the arm and evolved into a sever arthritic reaction/pain feels almost arthritic as if somebody punched me lasting for 2 months). On an unknown date, the patient experienced LIMB DISCOMFORT (Arm  is heavy/ left arm never felt the same after the second shot of Moderna Covid-19 vaccine), MOBILITY DECREASED (arm is heavy and hard to lift / difficult to raise arm/it almost hurts to lift their arm and it hurts to reach the staff from top shelf), ILLNESS (both shots made me sick), BONE PAIN (dull ache deep in the bone), ARTHRALGIA (occasional pain in  my right shoulder) and VACCINATION SITE PAIN (pretty painful at times and "keeps me up at night"/ dull ache deep in the bone where the shot was given that sometimes radiates from to the shoulder). The patient was treated with IBUPROFEN ongoing since an unknown date at an unspecified dose and frequency; DICLOFENAC DIETHYLAMINE (VOLTAREN EMULGEL) ongoing since an unknown date at an unspecified dose and frequency and MENTHOL, METHYL SALICYLATE (SALONPAS [MENTHOL;METHYL SALICYLATE]) (topical) ongoing since an unknown date for Shoulder pain, at an unspecified dose and frequency. At the time of the report, LIMB DISCOMFORT (Arm  is heavy/ left arm never felt the same after the second shot of Moderna Covid-19 vaccine), MOBILITY DECREASED (arm is heavy and hard to lift / difficult to raise arm/it almost hurts to lift their arm and it hurts to reach the staff from top shelf), ILLNESS (both shots made me sick), BONE PAIN (dull ache deep in the bone), ARTHRALGIA (occasional pain in  my right shoulder) and VACCINATION SITE PAIN (pretty painful at times and "keeps me up at night"/ dull ache deep in the bone where the shot was given that sometimes radiates from to the shoulder) outcome was unknown and PAIN IN EXTREMITY (Pain in arm) and ARTHRITIS (development of arthritis in shoulder/pain moved up and down  the arm and evolved into a sever arthritic reaction/pain feels almost arthritic as if somebody punched me lasting for 2 months) had not resolved. Not Related    DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 10-Nov-2020, SARS-CoV-2 test: positive (Positive) positive.         This case was linked to MOD-2021-168946 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 07-Jul-2021: Follow up  received, contains patients demographic information, lab data, additional events pain in arm and development of arthritis in shoulder were added and outcome is not recovered On 28-Jul-2021: Follow-up contains No New Information.