Loss Of Motor Control In Right Leg With Medical History

Loss of motor control in right leg with medical history consisting of relative good health but on atorvastan and Metropolol. Historical herniated discs in neck and diagnosed with spinal stenosis for about 2 years. Playing tennis and golf with pain and some loss of motor control. Had to give up walking the course due to pain fatigue. The right leg issue is starting to become an issue. Is this just a nerve damage issue due to the spinal stenosis or now something more serious?...ALS...MS...etc Seeing a internist who is only prescribing cortisone shots...time for a neurologist or?