diagnostic testing, 1140 initial assessment, 1140 management, 1140 treatment goal, 1139 –1140 Seborrheic dermatitis, 312 , 462 –463 , 462 f, 650 clinical features of, 469 t Secondary drowning, 680 Secondary infection of inflamed skin, 440 –441 Secondary syphilis, 442 , 442 f Second branchial cleft pit, 1350 f Sedative-hypnotics overdose, 1077 –1078 Sedatives, for intubation, 38 –39 , 39 t Seizures, 158 , 505 , 908 absence (petit mal), 883 active emergency treatment, 496 –498 planning for, 494 prevention and preparation, 496 apnea and, 884 associated hypoventilation, 884 background, 491 diagnostic approach to, 494 –496 , 495 f differential diagnosis, 492 –493 electrolyte abnormalities and, 495 etiology, 491 –492 evaluation and decision history, 493 –494 imaging studies, 496 laboratory tests, 495 –496 physical examination, 494 febrile, 494 , 498 , 886 generalized, 491 initial stabilization, 493 management, 884 –886 myoclonic, 883 neurologic emergencies clinical considerations, 882 –886