The Primary
Care Companionfor CNS Disorders

Schizophrenia/Schizoaffective Disorders

Case Report March 10, 2022

Pellagra With Casal Necklace Causing Secondary Schizophrenia With Capgras Syndrome in a Homeless Man

João Gama Marques, MD, PhD^a,b

Prim Care Companion CNS Disord 2022;24(2):21cr03014

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References (5)

Hoffer A. Pellagra and schizophrenia. Psychosomatics. 1970;11(5):522–525. PubMed CrossRef
Gama Marques J. Organic psychosis causing secondary schizophrenia in one-fourth of a cohort of 200 patients previously diagnosed with primary schizophrenia. Prim Care Companion CNS Disord. 2020;22(2):19m02549. PubMed CrossRef
Gama Marques J. Koro, Othello and Capgras syndromes in one patient with drug induced psychosis. Psychiatr Danub. 2015;27(4):429–430. PubMed
Gama Marques J, Carnot MJ. Huntington’s disease in a patient with 15-year history of Capgras delusion misdiagnosed as paranoid schizophrenia. Gen Hosp Psychiatry. 2016;39:97–98. PubMed CrossRef
Gama Marques J, Bento A. Marontology: comorbidities of homeless people living with schizophrenia. Acta Med Port. 2020;33(4):292. PubMed CrossRef

About the Authors

João Gama Marques, MD, PhD

Clínica de Psiquiatria Geral e Transcultural, Hospital Júlio de Matos, Centro Hospitalar Psiquiátrico de Lisboa, Portugal, Europe; Clínica Universitária de Psiquiatria e Psicologia Médica, Faculdade de Medicina, Universidade de Lisboa, Portugal, Europe; Corresponding author: João Gama Marques, MD, PhD, Centro Hospitalar Psiquiátrico de Lisboa, Clínica de Psiquiatria Geral e Transcultural, Hospital Júlio de Matos, Pavilhão Salgado d’Araújo, Avenida do Brasil, 53, Lisboa, 1749-002, Portugal ([email protected]).

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