<prompt> Lucid interval is classically seen inIntracerebral haematomaAcute subdural haematomaChronic subdural haematomaExtradural haematoma  <response>: Presentation with EDHTextbook presentation 10-27 have this classic presentation: brief posttraumatic loss of consciousness LOC: from initial impact followed by a lucid interval for several hours then, obtundation, contralateral hemiparesis, ipsilateral pupillary dilatation as a result of masseffect from hematomaDeterioration usually occurs over a few hours, but may take days and rarely, weeks longer intervalsmay be associated with venous bleeding.Other presenting findings: HA, vomit ing, seizure may be unilateral, hemi-hyperreflexia unilateral Babinski sign, and elevated CSF pressure LP is seldom used any longer. Bradycardiais usually a late finding. In peds, EDH should be suspected if there is a 10 drop in hematocritafter admission. 