medical condition The differentiating features of organic psychoses and psychiatric psychoses are listed in Table 13.2 TABLE 13.9 MEDICAL EVALUATION OF THE AGITATED CHILD Baseline evaluation Physical examination including neurologic examination If intoxication suspected Toxicologic screening Specific drug testing Anion/osmolar gap Blood gas If suggested by history or physical examination CBC ESR Urinalysis Electrolytes Blood glucose BUN Ammonia LFTs Pregnancy test Thyroid function tests EKG If trauma or mass lesion suspected Head CT or MRI CBC, complete blood cell count; ESR, erythrocyte sedimentation rate; BUN, blood urea nitrogen; LFTs, liver function tests; EKG, electrocardiogram; CT, computed tomography; MRI, magnetic resonance imaging The medical evaluation of agitation and aggression requires that each child who presents to the ED with these behaviors receive a complete physical examination, including full neurologic evaluation This makes it possible to detect most significant organic illnesses, including neurologic disease of traumatic, infectious, or structural origin Of note, mild incoordination, abnormalities of rapid alternating movements, and impaired tandem gait may be present in children with an attention-deficit disorder In situations in which an acute