Sustained effect of repeated botulinum toxin type A injections in trigeminal neuralgia

Abstract

Trigeminal neuralgia is a chronic severely disabling facial pain syndrome, which significantly affects the quality of life of patients. Drugs are effective in controlling pain, but surgery is offered in drug‐refractory cases, which may not be feasible due to lack of availability of neurosurgeons or due to unfavorable risk‐benefit ratio or patient preference. Botulinum neurotoxin is an effective alternative in patients who are drug refractory and not willing for surgery.