ALAD porphyria (Q97018)

Porphyria due to ALA dehydratase deficiency, also called Porphyria of doss, is an extremely rare form of acute hepatic porphyria characterised by neuro-visceral attacks without cutaneous manifestations. The disease occurs in children. Patients suffer acute neuro-visceral attacks, which persist for several weeks and manifest as intense abdominal pain, and neurological and psychological symptoms.