Associated features of trichotillomania may include:

• Hair pulling may be preceded or accompanied by various emotional states; it may be triggered by feelings of anxiety or boredom
• Hair pulling behavior may involve varying degrees of conscious awareness, with some individuals displaying more focused attention on the hair pulling, and other individuals displaying more automatic behavior
• Areas of complete alopecia (i.e., baldness), as well as areas of thinned hair density are common in individuals with trichotillomania
• Patterns of complete baldness except for a narrow perimeter around the outer margins of the scalp, particularly in the nape of the neck (“tonsure trichotillomania”) can occur
• Hair pulling does not usually occur in the presence of other individuals, except immediate family members
• Majority of individuals with trichotillomania also have done one or more other body-focused repetitive behaviors, including skin picking, nail biting, and lip chewing