What Causes Stiffness In Shoulders Along With Pins And Needles Down The Arm?

hi im a 50 year old woman with nerve pain (whiplash)in my neck since a car accident 11 years ago and i have gone on to get frozen shoulders and now experiencing pins and needles down my to my hand.full of pain all the time and fatigue i have had an abnormal cervical spine mri and now my doctor wants a brain scan done on my asap.i also have l hermitte s sign that goes down to my knees.worried i have MS . marianne,thankyou