Jаne Dоuglаs is 40-yeаr-оld female with nо comorbid medical history other than mild vitamin D deficiency that she intermittently supplements for. She comes to your primary clinic complaining of some weakness to her right side, fatigue for a couple of days. Since it hasn't improved has scheduled today's appointment. Upon further questioning, she remembers this happening once before a couple years ago and resolved completely, but she “chalked it up to stress”. What is your next step after doing a thorough physical exam?