806 Conditions for Further Study
Stereotypic self-injury. Stereotypic self-injury, which can include head banging, self-
biting, or self-hitting, is usually associated with intense concentration or under conditions
of low external stimulation and might be associated with developmental delay.
Excoriation (skin-picking) disorder. Excoriation disorder occurs mainly in females and
is usually directed to picking at an area of th e skin that the individual feels is unsightly or
a blemish, usually on the face or the scalp. As in nonsuicidal self-injury, the picking is often
preceded by an urge and is experienced as pleasurable, even thoug h the individual real-
izes that he or she is harming himself or hersel f. It is not associated with the use of any im-
plement.