The investigators studied the frequency of headache , dizziness , and other complaints and the intensity of cephalalgic syndrome , by using a visual analog scale , the quality of life by the Medical Outcomes Study 36-Item Short-Form Health Survey ( MOS SF-36 ) questionnaire , that of sleep by the subjective sleep characteristics questionnaire elaborated at the Moscow City Somnological Center , the level of asthenia by a subjective asthenia rating scale ( Multidimensional Fatigue Inventory ( MFI-20 ) , and autonomic status , by applying objective and subjective scales on days 1 and 25 of therapy .