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A 5-year-old boy with 8 months' delay in speech development and 6 months' delay in fine motor skills presented with two episodes of paralysis of his arm without jerks or involuntary movements, followed by impairment of speech and loss of motor control over both legs, resolving within 15 min. Physical examination was normal except for joint hypermobility. No cerebral spinal …
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.