Wilson's disease (WD) is a rare autosomal recessive disease due to copper metabolism disturbance. The clinical presentation spectrum of Wilson's disease is wide and initial findings of the disease depend on the organ involved. Neurologic disorders can develop insidiously or precipitously with intention tremor, dysarthria, rigid dystonia, Parkinsonism, deterioration in school performance or behavioral changes. This article is presenting an 11-yr old boy with chief complaint of falling and upper limb spasm. He referred to the Neurology Department, Ghaem Hospital, Mashhad, northeastern Iran in 2016. His symptoms began from 6 months earlier as mood instability (prolonged spontaneous crying). He was also suffering from occasionally tremor and micrographia. Initial investigations were normal and with diagnosis of depression and psychiatric problems, he had undergone treatment with fluoxetine and risperidone. Wilson's disease should be considered in the diagnosis of all children with psychiatric and musculoskeletal symptoms.
Keywords: Childhood; Iran; Psychological symptoms; Wilson disease.