Botulinum toxin type A injections demonstrate remarkable efficacy in treating hemifacial spasm in elderly patients.

[OBJECTIVE] To investigate the effectiveness of botulinum toxin type A (BTX-A) injections in elderly patients with hemifacial spasm (HFS).

[METHODS] In this retrospective study, a total of 120 elderly patients diagnosed with HFS were recruited and divided into two groups: a research group (n=65) receiving multi-point BTX-A injections and a control group (n=55) undergoing conventional treatment. Comparative analyses were conducted to evaluate therapeutic efficacy, duration of efficacy, adverse reactions, Hamilton Anxiety Scale (HAMA) scores, and Hamilton Depression Scale (HAMD) scores between the two groups. Furthermore, factors influencing treatment outcomes in elderly HFS patients were investigated.

[RESULTS] The research group demonstrated significantly higher overall efficacy, prolonged durations of therapeutic efficacy in grades II, III, and IV, a lower incidence of adverse reactions, and more pronounced improvements in HAMA and HAMD scores. Additionally, Cohen grading, HAMA and HAMD scores, and the treatment approach were independently correlated with treatment failure in elderly patients.

[CONCLUSION] Multi-point BTX-A injections are highly effective in treating HFS in elderly patients.