Evaluation of the Efficacy of the Combined Therapy of Botulinum Toxin and Hyaluronic Acid Compared to Conservative Intervention in the Treatment of Chronic Peripheral Facial Paralysis of Oncologic Etiology.

Background: Neoplasms in the head and neck often lead to peripheral facial paralysis (PFP), impacting facial expression and causing psychological distress. Standard treatments involve physiotherapy, but botulinum toxin type A (BTA) and hyaluronic acid (HA) injections have shown promise in promoting facial symmetry.

Aim: To assess the effectiveness of combined BTA and HA intervention in PFP patients, comparing it to conventional treatment (physiotherapy).