research Nail Hyperpigmentation Following Valproic Acid Use: A Rare Case Report February 2023 in “Indian journal of private psychiatry/Indian Journal of Private Psychiatry” Valproic acid can rarely cause reversible nail discoloration.
research Nail, hair and skin hyperpigmentation associated with indinavir therapy 15 citations , July 2004 in “AIDS” Indinavir therapy can cause reversible skin, hair, and nail darkening.
research Twenty nail onychomadesis: An unusual finding in Cronkhite–Canada syndrome 13 citations , June 2010 in “Journal of The American Academy of Dermatology” A man with Cronkhite-Canada syndrome had all 20 nails detach but improved with treatment.
research Diffuse Gastrointestinal Polyposis With Skin, Hair, and Nail Changes December 2022 in “Gastroenterology” A man with Cronkhite-Canada syndrome improved significantly with immunosuppressive therapy.
research Nail Matrix Pathology in Cronkhite–Canada Syndrome: The First Case Report 8 citations , April 2017 in “American Journal of Dermatopathology” Inflammation may cause nail issues in Cronkhite–Canada Syndrome.