We present a 21 year old woman treated with carbamazepine because of epileptic seizures. She was evaluated at the epilepsy section for possible seizures associated with abdominal pain, psychosis, dysautonomic features and elevated hepatic enzymes. Diagnosis was based on clinical features and biochemical determination of urinary porphobilinogen and absence of fluorescence for porphyrin in blood sample and hepatic tissue. Conclusions: Acute Intermittent Porphyria constitutes a rare cause of symptomatic seizures but the association of seizures with abdominal pain, dysautonomic features, and psychosis suggest the disease and its recognition is very important because it is potentially mortal but suitable to improve with adequate treatment.

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