Acute intermittent porphyria

DDx

Acute abdominal pain due to other causes, e.g., appendicitis, peptic ulcer disease, cholecystitis, diverticulitis, ruptured ectopic pregnancy, familial Mediterranean fever
Polyneuropathy due to other causes
Guillain-Barré syndrome
Lead or other heavy metal poisoning
Psychosis due to other causes
SIADH due to other causes
Dark urine due to other causes, e.g., alkaptonuria

See related DDx

Generalized abdominal pain
Spells (nonspecific)
SIADH
Peripheral neuropathy (polyneuropathy)

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