ObjectiveBotulinum toxin type A is widely used for the treatment of spasticity, focal dystonia, hemifacial spasm, hyperhidrosis, strabismus, chronic migraine, and also cosmetic purposes. Therapeutic use is commonly effective and safe. However, if toxin enters the vascular space and gets through to peripheral cholinergic nerve terminals, it may lead to iatrogenic botulism.MethodWe presented a patient who is diagnosed as iatrogenic botulism and treated with antitoxin at the 15th day of the exposure.ResultsAfter the antitoxin administration, dramatical response to the treatment was observed.ConclusionsIn this report, we want to evaluate a new case of iatrogenic botulism and emphasize the importance of antitoxin administration regardless the timing of the exposure for patients with progressing paralysis.