Atypical Parkinsonism with Eye-of-the-Tiger Sign

Thomas M, Hayflick SJ, Jankovic J. Clinical heterogeneity of neurodegeneration with brain iron accumulation (Haller- vorden-Spatz syndrome) and pantothenate kinase-associ- ated neurodegeneration. Mov Disord. 2004;19:36–42. doi: 10.1002/mds.10650.

Höglinger GU, Respondek G, Stamelou M, Kurz C, Josephs KA, Lang AE, et al. Clinical diagnosis of progressive supra- nuclear palsy: The movement disorder society criteria. Mov Disord. 2017;32:853–64. doi: 10.1002/mds.26987.

Cossu G, Cella C, Melis M, Antonini A, Floris GL, Ruffini L, et al. [123I]FP-CIT SPECT findings in two patients with Hallervorden–Spatz disease with homozygous mutation in PANK2 gene. Neurology. 2005;64:167-8. doi: 10.1212/01. WNL.0000148577.62644.77.

Davie CA, Barker GJ, Machado C, Miller DH, Lees AJ. Pro- ton magnetic resonance spectroscopy in Steele-Richard- son-Olszewski syndrome. Mov Disord. 1997;12:767–71. doi: 10.1002/mds.870120525

Natera-Villalba E, Martínez-Castrillo JC, López-Sendón Moreno JL, Gómez-López A, Sánchez-Sánchez A, López- Martínez MJ, et al. Eye-of-the-Tiger Sign with an Unex- pected Pathological Diagnosis. Mov Disord Clin Pract. 2021;9:98-103. doi: 10.1002/mdc3.13366