35 male eye twitching, dizziness, face numbness, arm and leg weakness & fatigue, tight muscles MRI clear for MS what are other possibilities?

Asthenia. The other possibilities are anemia, thyroid problem , adrenal cause, connective tissue disease, vitamins, mineral deficiency &hypoglycemia. You have asthenia. The possibility of cancer and anorexia should be sought. Please see your doctor who knows you well. Thanks.