It is characterized by symptoms of peripheral neurotoxicity, together with a progressive neuromuscular blockade, that leads to a characteristic myasthenic syndrome or flaccid paralysis.Bipalpebral ptosis is a sign of an advanced stage of envenoming and there is a significant risk of respiratory failure.
En algunas regiones del mundo, las serpientes venenosas forman grupos antigénicos complejos, lo que dificulta el diagnóstico clínico y la elección del antiveneno apropiado.