Scurvy hidden behind neuropsychiatric symptoms.

Approaching an uncommon disease may result in diagnostic delay even in patients with typical clinical features. In this respect, diseases related to nutritional deficiencies may represent a diagnostic challenge. We describe a 2.5-year-old child with typical features of scurvy, who was referred for autistic-like behavior and severe muscle weakness and pain in lower limbs. Extensive investigations for non-nutrition-related disorders were first performed, including a muscle biopsy showing a selective type II fibers hypotrophy. Scurvy was eventually considered, after recalling the child's peculiar dietary habits.