had trouble falling asleep till 2 or 3 in the morning; on the 6th day the patient started having leg symptoms/it got worse and worse for a week/still suffering from leg pain; muscle tightness in the legs; feeling of swelling visually/but with touch it doesnot seem swollen; cannot stand or sit with legs on the ground for more than 30 minutes; cannot stand or sit with legs on the ground for more than 30 minutes; whole body ache; had fever; This spontaneous case was reported by a consumer and describes the occurrence of PAIN IN EXTREMITY (on the 6th day the patient started having leg symptoms/it got worse and worse for a week/still suffering from leg pain), MUSCLE TIGHTNESS (muscle tightness in the legs), PERIPHERAL SWELLING (feeling of swelling visually/but with touch it doesnot seem swollen), DYSSTASIA (cannot stand or sit with legs on the ground for more than 30 minutes) and SITTING DISABILITY (cannot stand or sit with legs on the ground for more than 30 minutes) in a 38-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 046C21A and 017E21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No medical history was provided.  Concomitant products included MULTIVITAMINS [VITAMINS NOS] for an unknown indication.   On 15-Aug-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 15-Sep-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In September 2021, the patient experienced PAIN (whole body ache) and PYREXIA (had fever). On 21-Sep-2021, the patient experienced PAIN IN EXTREMITY (on the 6th day the patient started having leg symptoms/it got worse and worse for a week/still suffering from leg pain), MUSCLE TIGHTNESS (muscle tightness in the legs), PERIPHERAL SWELLING (feeling of swelling visually/but with touch it doesnot seem swollen), DYSSTASIA (cannot stand or sit with legs on the ground for more than 30 minutes) and SITTING DISABILITY (cannot stand or sit with legs on the ground for more than 30 minutes). On 07-Oct-2021, the patient experienced INSOMNIA (had trouble falling asleep till 2 or 3 in the morning). The patient was treated with DICLOFENAC at an unspecified dose and frequency and VITAMIN B COMPLEX (B COMPLEX [VITAMIN B COMPLEX]) at an unspecified dose and frequency. In September 2021, PAIN (whole body ache) and PYREXIA (had fever) had resolved. At the time of the report, PAIN IN EXTREMITY (on the 6th day the patient started having leg symptoms/it got worse and worse for a week/still suffering from leg pain), MUSCLE TIGHTNESS (muscle tightness in the legs), PERIPHERAL SWELLING (feeling of swelling visually/but with touch it doesnot seem swollen), DYSSTASIA (cannot stand or sit with legs on the ground for more than 30 minutes) and SITTING DISABILITY (cannot stand or sit with legs on the ground for more than 30 minutes) had not resolved and INSOMNIA (had trouble falling asleep till 2 or 3 in the morning) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Physical examination: normal (normal) nerve reflexes and sensation were all normal.         Concomitant medication included OTC multivitamin.  When the patient extends the leg on the couch, the symptoms subside. The patient noticed that when was resting with the legs extended, the swelling went away. However, if the patient stands or sits with feet down, the symptoms came back. The patient was really worried that these symptoms would never go away.  The patient was referred to a neurologist for the issues but the appointment was not until Dec-2021 and the office had told the patient that the symptoms did not seem neurological.  When the physician did the physical examination, the patient's nerve reflexes and sensation were all normal. However, the patient reported that this sensation bothered the patient a lot.  The VAERS Id for the product is 1762880.