A study of the efficacy of plasmapheresis for the treatment of drug induced toxic epidermal necrolysis.

The efficacy of plasmapheresis for the treatment of toxic epidermal necrolysis (TEN) in our patient and related reports in the literature were examined. The patient, a 41-year-old female, was diagnosed as having drug (Sedes-G [isopropylantipyrin, arylisopropylacetoureid, and phenacetinum]) induced TEN. Upon admission to our hospital, extensive corticostroid therapy was initiated. After 6 days, because more than 90% of the patient's body surface was affected by TEN, it was concluded that the patient was unresponsive to corticosteroid therapy. Double filtration plasmapheresis (DFPP) was therefore begun. After 2 sessions of DFPP, extensive reepithelialization rapidly occurred, and after 3 sessions of DFPP, the improvement was dramatic. The patient's condition had almost healed during 1 month's hospitalization. It has been reported in the literature that 22 patients with drug induced TEN have been treated with plasmapheresis. The mortality rate of 23 patients, including our patient, was 17.4%. The rate of effectiveness of plasmapheresis on drug induced TEN is 82.6%. It appears that some kind of necrolytic factors were removed by the plasmapheresis. This suggests that plasmapheresis may be an effective treatment for drug induced TEN.