In this review, researchers analyzed literature on trichotillomania and found advances in understanding its neurobiology—highlighting dysregulated reward circuits and genetics—and treatments, with behavioral therapy and innovative pharmacological approaches improving outcomes where traditional SSRIs do not.
This review highlights advances in understanding trichotillomania's neurobiology and treatment, noting behavior therapy's effectiveness and new pharmacological and digital therapies, while addressing underdiagnosis, stigma, and research gaps.
In this literature review, researchers highlighted that trichotillomania involves dysregulated reward circuits, abnormal sensory processing, and potential genetic factors, advancing both therapeutic strategies and understanding of the condition, but stigma and provider training gaps persist in effective care provision.
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January 2013 in “Digital Scholarship - UNLV (University of Nevada Reno)” This study hypothesized that finasteride administration may increase stress-induced amphetamine locomotor sensitization due to its impact on brain reward systems involving the neurosteroid allopregnanolone.
April 2026 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that distinct neurons in the nucleus accumbens lateral shell regulate scratching behavior differently; D1R neurons promote scratching while D2R neurons help stop it, with elevated dopamine levels during chronic itch potentially enhancing persistent scratching.