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Behr syndrome includes an optic atrophy associated with neurological manifestations. This syndrome is clinically similar to Costeff syndrome but can be distinguished by the absence of metabolic abnormalities. This inherited disorder is transmitted following an autosomal recessive pattern. The optic atrophy is responsible for a moderate to severe visual impairment that appears early in life. The neurological manifestations can include myoclonic epilepsy, progressive spastic paraplegia due to pyramidal tract involvement, dysarthria, extra-pyramidal tract signs, ataxia, urinary incontinence, mental retardation, posterior column sensory loss or muscle contractures.
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