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[Optic neuropathy in biotinidase deficiency].
D Puertas Bordallo1, C Martín Reyes, M L Ruiz-Falcó Rojas
1Sección de Estrabología, Hospital Infantil Niño Jesús, Madrid, Spain. dpb@arrakis.es
Archivos De La Sociedad Espanola De Oftalmologia
|August 13, 2004
Summary
A 12-year-old boy experienced vision loss and was diagnosed with optic neuropathy. Prompt diagnosis of biotinidase deficiency and biotin treatment led to rapid clinical improvement, highlighting the importance of this screening.
Area of Science:
- Pediatric Neurology
- Metabolic Disorders
- Ophthalmology
Background:
- Optic neuropathy in children can present with significant vision loss.
- Congenital metabolopathies are often undiagnosed genetic disorders affecting various bodily functions.
- Sensorineural hearing loss and dermatological conditions can co-occur with metabolic disorders.
Observation:
- A 12-year-old male presented with severe vision loss (0.1 in both eyes).
- He exhibited comorbidities including sensorineural hearing loss, asthma, dermatitis, and alopecia.
- Initial treatment with intravenous corticosteroids for retrobulbar optic neuropathy yielded no improvement.
Findings:
- Screening for congenital metabolopathies identified a biotinidase deficiency.
- Initiation of biotin therapy resulted in rapid and significant clinical improvement of vision loss.
- This case underscores the treatable nature of certain optic neuropathies.
Implications:
- Biotinidase deficiency should be considered in the differential diagnosis of pediatric optic neuropathy.
- Early detection and biotin supplementation are crucial for reversing vision loss in affected children.
- Screening for metabolic causes is essential for effective management of unexplained neurological deficits in pediatrics.