system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 4-year-old boy with a history of cerebral palsy is brought to the neurology clinic by his mother with progressive tightness in the lower extremities. Although the patient has been intermittently undergoing physiotherapy for the past 2 years at a specialized center, the patient’s mother is concerned he cannot yet climb the stairs. The neurologist recommends a different treatment, which involves multiple intramuscular injections of a drug in the muscles of the lower extremities to relieve tightness. The neurologist says this treatment approach is also often used to relieve headaches and reduce facial wrinkles. Which of the following is most likely the mechanism of action of this drug?
assistant
Blocks the release of acetylcholine