You can request a neurological examination to investigate whether the “dragging left foot and hand” is due to muscle, nerve failure or depression. A “cool” and “shocked” feeling from the tongue, in addition to face “tingles” could be inexplicable symptoms that may be due to anxiety. Anxiety and/or depression can cause many strange symptoms that appear to be symptoms of other disease... but in fact, there is nothing organic present. Fatigue and sleepiness are very common symptoms of depression. To confirm depression as a reason for your symptoms you can request a neurological examination and some standard blood analyses first to exclufe neurological dysfunction. If everything is OK and neurological diseases are excluded, you can ask help from a mental health doctor.