<prompt> A female presenting with progressive visual defect is diagnosed to have retinitis pigmentosa. All of the following conditions are associated with retinitis pigmentosa, EXCEPT:Refsums diseaseHallervorden-Spatz diseaseNARPAbetalipoproteinemia  <response>: Some forms of retinitis pigmentosa occur in association with rare, hereditary systemic diseases like olivopontocerebellar degeneration, Bassen-Kornzweig disease abetalipoproteinemia, Kearns-Sayre syndrome, Refsums disease, and neuropathy, ataxia, and retinitis pigmentosa NARP syndrome. Chronic treatment with chloroquine, hydroxychloroquine, and phenothiazines especially thioridazine can produce visual loss from a toxic retinopathy that resembles retinitis pigmentosa. Hallervorden-Spatz disease or neurodegeneration with brain iron accumulation 1 NBIA1 or pantothenate kinase-associated neurodegeneration PKAN, is characterized by extrapyramidal and cognitive abnormalities, dysahria, dysphagia, and ocular abnormalities eg, gaze palsies, optic atrophy. Ref: Hoon J.C. 2012. Chapter 28. Disorders of the Eye. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo Eds, Harrisons Principles of Internal Medicine, 18e. 