Hi, thanks for writing to HCM. Multiple sclerosis is unlikely in your case as you don t have other common symptoms of MS which include visual disturbances, Gait abnormalities etc. If you are still in doubt, get an MRI of the brain which will rule out the presence of MS. I suspect that the cause of your tingling in leg going down into the foot could be due a pinched nerve in the lumbar spine by a protruded intervertebral disc. An MRI scan of the lumbar spine will confirm the diagnosis. The conservative management of your condition is as follows - - Maintain optimum body weight,if you are obese - Avoid lifting heavy weights as it imparts more strain on your back - Avoid excessive forward bending activities as it will worsen the disc protrusion. if you want to bend forwards, do it with your hips and knees flexed. - Use a lumbosacral back support to stabilize your spinal muscles - Physiotherapy is needed to strengthen your back muscles. - Use analgesics like advil or aleve and muscle relaxants as needed. Vitamin B12 supplements & Pregabalin may be helpful. I suggest you to consult an orthopedic surgeon for a detailed evaluation and further management. Hope this information is helpful. Good day