Hormonal contraception, 538 Hormone-secreting tumors, 344 Horner syndrome, 183 f, 185 , 558 Household cleaning products, 1058 , 1058 f caustics, 1058 –1061 hydrocarbons, 1061 –1062 , 1061 t lead, 1062 –1064 , 1064 t pesticides, 1065 rodenticides, 1065 , 1066 t Housemaid’s knee, 1369 HSV-associated encephalitis, 891 –892 H-type fistulae, 1408 , 1409 f Human immunodeficiency virus (HIV) infection, 153 , 196 , 309 , 315 , 317 , 347 , 419 Humanism, 17 balance of professionalism and, 17 with colleagues and staff, 19 in ED, 18 t via self-care, 19 Human metapneumovirus, 572 Human papilloma virus (HPV), 533 Humeral fractures, 1183 –1184 , 1184 f, 1185 Hutchinson teeth, 350 Hydralazine, 245 Hydration, 298 Hydrocarbons, 1061 –1062 , 1061 t, 1079 Hydroceles, 412 –413 , 413 f, 415 Hydrocephalus, 1385 , 1389 –1390 acute clinical pitfall, 1385 clinical recognition, 1385 diagnostic imaging, 1385 management, 1385 –1386 treatment goals, 1384 –1385 arterial infarcts, 1390 brain abscess, 1389 meningitis, 1389