Nowadays Botulinum Toxin injection has become the most welcomed cosmetic procedure for its satisfactory results, less downtime. However, adverse effects like fever may happen after Botulinum Toxin injection and the patients may not be informed about the side effects even though they were mentioned in the inserted instruction of the drug. Here, we present three patients who had a fever caused by Botulinum Toxin injection.

Keywords: Asian patients; Botulinum Toxin injection; adverse effect; fever; flu-like syndromes.