Unable to smile after receiving Botox injections for facial slimming, face appears expressionless. What should I do? Could it be facial paralysis?

After receiving a slimming injection in the face, if you experience difficulty smiling or a lack of facial expressions, this may be due to the effects of botulinum toxin. Botulinum toxin achieves a slimming effect by blocking signal transmission between nerves and muscles, causing the masseter muscles to gradually relax. During this process, if excessive botulinum toxin is injected or the injection technique is improper, it may lead to neuromuscular conduction disturbances, causing facial muscles to contract abnormally and resulting in symptoms such as difficulty smiling and facial expressionlessness. Additionally, facial nerve injury, muscle atrophy, and depression may also cause similar symptoms.

If facial stiffness occurs after receiving a slimming injection, contact the administering physician immediately or visit a qualified medical facility. A professional physician should evaluate the condition and provide appropriate treatment. The effect of botulinum toxin typically diminishes gradually over several months, and the facial stiffness will ease accordingly. During this period, maintain a positive mindset and avoid excessive anxiety. Do not attempt to accelerate recovery through massage or other methods, as this might interfere with the effectiveness of botulinum toxin or even cause unnecessary side effects. If symptoms persist for an extended period or worsen, seek medical attention again, as further evaluation and treatment might be necessary.