Bilgili, Serap GunesKaradag, Ayse SerapCalka, OmerAltun, Faruk2025-05-102025-05-1020111556-952710.3109/15569527.2011.5743032-s2.0-80455168333https://doi.org/10.3109/15569527.2011.574303https://hdl.handle.net/20.500.14720/1218Pellagra is characterized by dermatitis, diarrhea, dementia and eventually death occurring as a result of niacin or its precursor tryptophan deficiency. Although pellagra is a well-known complication of isoniazid (INH) therapy, the clinical diagnosis may be missed or delayed that may cause life-threatening consequences. Due to the diversity of pellagra-related signs and symptoms, the diagnosis can be made with an appropriate index of suspicion. We report a 7-year-old boy presenting with INH-induced pellagra that resolved after the administration of the niacin therapy.eninfo:eu-repo/semantics/closedAccessIsoniazidPellagraChildArticle304Q4Q331731921517721WOS:000296498200013