Suggest Treatment For Headache And Dizziness

hi there!!! my friend is suffreing from a disorder..as in he's get's a severe pain in his head & every things starts revolving around him, the right side wall move's to left & things like that..it last for abt 5-10 min & occurence is generally when he's over stressed/ depressed...could u help me on this as in which doc he shud consult to..he's in TRV-Kerala..is it virtigo problem, hope it's normal pls sugesst..asap..rgds...Ms.Patil