4 years ago i stared to shuffle. It lasted intermittantly for one week. ! year later it came backw/ achiness. I did water aerobics 4or 5 times a week which helped but I was beginng to have sllep issues. I was prescribed prednizone and amytriptiline.It lessened. Last year it came back w/ a vengence.I have had many blood tests and 4 MRS s of head and back. Nothing remarkable. I still shuffle ,have sleep issues,and ache. No dr. seems to be able to diagnose or treat me.
I think there may be your psychological involvement disturb you more. If your doctor said you don't have any problem. You should stronger from your inner side. It makes you strong. Go for meditation if you can't proper sleep. Or take ayurvedic medicine with consult to any Ayurveda doctor nearby you. Our Ayurveda medicine has better result. Or use brain tonic