Severe Hyponatremia and Syndrome of Inappropriate Antidiuretic Hormone Secretion After Kambô Ritual

Kambô poisoning can cause severe hyponatremia, neurologic effects, and gastrointestinal symptoms. Clinicians need to determine whether the derangements are the result of ritualistic consumption of water or toxin-induced syndrome of inappropriate antidiuretic hormone secretion (SIADH). An appropriate workup for SIADH guides electrolyte correction and leads to resolution of neurologic and systemic effects.