Acute Psychosis in an Adolescent with Undiagnosed Homocystinuria
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Conclusion: A diagnosis of homocystinuria due to CBS deficiency should be considered in patients presenting, as target signs, ectopia lentis with or without learning difficulties, and should also be taken into account as a potentially treatable cause of acute psychosis in childhood and adolescence.
What Is Known: • Homocystinuria frequently present with ectopia lentis, myopia, cognitive impairment, Marfan-like phenotype, osteoporosis, cerebrovascular, or cardiac thrombosis. • Acute psychosis has rarely been reported as a presenting symptom of the disease.
What Is New: • The complete psychotic symptoms' remission with pharmacological doses of pyridoxine and folic acid, without antipsychotic drugs.
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