Hasan Hüseyin Gökpınar *
In recent years, the rate of administration of Botulinum neurotoxin type A injection in the cosmetic field have increased significantly, with rare but important complications ranging from ptosis to acute respiratory distress syndrome. Particularly in functional treatments with therapeutic goals such as focal spasticity and dystonia management, the systemic complication rate is much higher compared to cosmetic cases. Therefore, it is recommended that these procedures be performed under guidance. Ultrasound, with its advantages in safety, practicality, and efficacy, especially in interventional procedures where pharmacological agents are delivered to target tissues, is increasingly becoming an important guide. We discuss how using ultrasound guidance can improve safety and efficacy of Botulinum neurotoxin type A injection.