Final answer:
The primary motivation for skin-picking in excoriation disorder is typically boredom or anxiety reduction, as it serves as a coping mechanism for stress and distress.
Step-by-step explanation:
The most typical motivation for skin-picking behavior in excoriation (skin-picking) disorder is boredom or anxiety reduction. Individuals with this disorder often pick at their skin as a way to relieve stress or manage feelings of anxiety and tension, rather than for pleasure, pain relief, or attention-seeking behavior. The behavior is usually a means of coping with negative emotions or psychological distress.