Abstract
The authors report a patient with cervical dystonia, previously treated with botulinum toxin A (BTX-A), who developed bilateral ptosis and difficulty with accommodation only after botulinum toxin B (BTX-B). High-frequency repetitive nerve stimulation of the abductor digiti minimi demonstrated a 34% increment in compound muscle action potential. No increment in 20 people injected with BTX-A and no cases of ptosis in a chart review of 1,606 BTX-A injections for cervical dystonia were found. The authors conclude that systemic spread of BTX-B can cause symptomatic involvement of autonomic neurons.
Original language | English |
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Pages (from-to) | 1445-1447 |
Number of pages | 3 |
Journal | Neurology |
Volume | 59 |
Issue number | 9 |
DOIs | |
State | Published - Nov 12 2002 |