Answer 18

 

The physical finding I have detected is: postural hypotension....

 

If we put this finding with his inexplicable numerous symptoms including the micturation induced syncope, dyspnea, palpitation, etc....

 

We doubtless facing a case of "dysautonomia" which means disturbance of the perfect balance between sympathetic and parasympathetic components of the autonomic nervous system. However the patient gave good response regarding the symptoms he used to suffer from just by assurance and increasing physical exercise.