[Painful tic convulsif and Botulinum toxin].

Introduction: Painful tic convulsif is a rare disorder that associates trigeminal neuralgia (TN) and ipsilateral hemifacial spasm (HFS). These two disorders are the most common examples of hyperactive cranial rhizopathy and are frequently caused by vascular compression of these cranial nerves at the nerve root entry and exit zone in the brain stem, which leads to paroxysmal ephaptic transmission.

Case Reports: We report the cases of four patients with combined TN and HFS out of a total of 247 patients with HFS who were treated with botulinum toxin.