“…Most likely, her attack of AIP was precipitated by a combination of (1) hormonal changes during menstruation, (2) epidural analgesia of lidocaine and fentanyl, (3) low-calorie intake during the postoperative period (510 Kcal/day) and (4) surgical site pain after cessation of epidural analgesia [1], [11]. Medline search revealed only five cases of AIP after surgery (Table 1) [9], [10], [11], [12], [13]. Other triggers that increase the demand for heme and hence induce AIP include porphyrinogenic drugs, infections, smoking, alcohol intake, fasting, psychological stress, and hormonal changes associated with menstruation and ovulation [1], [2], [3].…”