Identify a common characteristic of Trichotillomania.

Trichotillomania, more commonly known as hair-pulling disorder, is characterized by the repetitive and compulsive pulling out of one's hair, which can lead to noticeable hair loss. This behavior may occur in various areas of the body, including the scalp, eyebrows, and eyelashes. Individuals with Trichotillomania often experience an increasing sense of tension leading up to the act of pulling out hair and may feel relief or gratification afterward.

This behavior can be associated with attempts to manage stress or anxiety, and it often occurs as a coping mechanism, distinguishing it clearly from other compulsive behaviors found in different disorders. In contrast, the other options involve different types of behaviors that do not align with the defining characteristics of Trichotillomania. For example, excessive grooming of the skin pertains to skin-picking disorders, compulsive buying behavior relates to shopping addiction, and frequent checking of locks and doors is more associated with Obsessive-Compulsive Disorder (OCD). Thus, hair pulling is the hallmark feature that identifies Trichotillomania.