Krabbe disease is a lysosomal storage disorder that leads to accumulation of (two substrates) .
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A ten-month-old girl is referred to a pediatric neurologist for several seizures over the last few months and new difficulty with walking. She was born full-term without complications to a G2P2 mother after an uneventful pregnancy. On physical examination the child is unable to stand upright without support and does not track objects with her eyes. MRI shows optic nerve atrophy. A nerve biopsy shows demyelinated nerves with nests of multinucleated globoid cells. Which of the following is the correct diagnosis?