My Son Has Pain In His Foot/swelling Of Ankles And

My son has pain in his foot/swelling of ankles and heart flutters. Could these things be connected? He went to Dr. His #'s are good/Went to podiatrist/gave him a foot brace/which helped. Has flared up again. Thought plantar Finitus? He wants an MRI? Any thoughts? Mom YYYY@YYYY