<prompt> The earliest manifestation of increased intracranial pressure following head injury is:Ipsilateral pupillary dilatationContralateral pupillary dilatationAltered mental statusHemiparesis  <response>: Early signs of elevated iCP include drowsiness and a diminished level of consciousness altered mental status. Coma and unilateral papillary changes are late signs and require immediate intervention. Ref: Harrisons Internal Medicine, 16th Edition, Page 1633; Clinical Hepatology: Principles and Practice of Hepatobiliary Diseases By Henryk Dancygier, Scott L. FRW Friedman, H. D. CON Allescher, U. CON Beuers, Volume 2, 2010, Page 938 