functional consequences of, 428
prevalence of, 427
risk and prognostic factors for, 428
Excoriation (skin-picking) disorder, 235, 236, 
254–257
associated features supporting diagnosis of, 255
comorbidity with, 257
development and course of, 255
diagnostic criteria for, 254
diagnostic features of, 254–255
diagnostic markers for, 255
differential diagnosis of, 256
functional consequences of, 256
prevalence of, 255
risk and prognostic factors for, 255
Exhibitionistic disorder, 685, 689–691
comorbidity with, 691
development and course of, 690
diagnostic criteria for, 689
diagnostic features of, 689–690
differential diagnosis of, 691
functional consequences of, 691
gender-related diagnostic issues in, 691
prevalence of, 690
risk and prognostic factors for, 690–691
specifiers for, 689
subtypes of, 689
Externalizing disorders, 13