Contribution of international cooperation in the management of the first documented case of Lonomia caterpillar envenoming (Lonomism) in Guyana.

Severe Lonomia caterpillar envenoming is an increasing hazard in South America. It can trigger severe coagulation disorders that can progress to systemic complications and death. We report the first documented case of severe Lonomia caterpillar envenoming in Guyana. It was managed using antivenom provided by the Brazilian Ministry of Health as part of humanitarian support. This case describes a successful international collaboration driving a favorable outcome for the envenomed patient. [Display omitted] • Lonomism is an increasing hazard in South America. • Lonomia obliqua and Lonomia achelous are the most involved species. • Antivenom is the key treatment of Lonomism. • Antivenom can be obtained through an international cooperation process. [ABSTRACT FROM AUTHOR]