age 35, 5 fit 11inch, about 70 kollos, low sond of my voice for about 1 year. it is likely Croaky voice. it caused mainly almost always i deliver political, social speech. and some times i shout so highest volume such as like quarrel. very recently i visited a local doctor and I've done a andoscopy test. they named my disease as N/A. what does it mean and what i should done now ?please let me know