“…Pantothenate kinase-associated neurodegeneration (PKAN) is a rare autosomal recessive disorder, and a form of neurodegeneration with brain iron accumulation (NBIA). [1][2][3] PKAN cases can be either classical, with onset in the first decade, or atypical, with late-onset, both presenting extrapyramidal dysfunction. 1,3 The 'eye of the tiger' sign is the characteristic MRI finding.…”