84 citations
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October 2005 in “Annals of Clinical Psychiatry” Hairpulling, skin picking, and nail biting cause significant harm and need more research for better treatments.
26 citations
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February 1991 in “PubMed” Trichotillomania can be identified by a "Friar Tuck sign" and nail-biting.
4 citations
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March 2021 in “Experimental dermatology” Minoxidil increases nail growth more than biotin.
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21 citations
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January 2005 in “Skinmed” Hair and nails are similar keratin structures with different shapes and growth, affected by the same diseases and environmental factors.