The severity of injuries to the mucosa of the gastrointestinal tract is commonly rated using the Zargar criteria. Category Findings 0 Normal examination 1 Mucosal edema and erythema 2a Superficial ulcerations or erosions, friability, blister formation, exudates, hemorrhages 2b Deep ulcerations (either discrete or circumferential) as well as the findings described in 2a 3a Multiple small, scattered areas of necrosis 3b Extensive necrosis
Caustic ingestion
Mushroom poisoning
Shellfish poisoning
Scombroid food poisoning
Organophosphate poisoning
Strychnine poisoning
Ethylene glycol poisoning
Pesticide poisoning