I wish there were something new and startling to add to the knowledge of lupus erythematosus disseminatus. Unfortunately, there is not. About the best one can do is to rehash the available literature, add a bit from one's own experience and perhaps theorize a little where it does not seem to lead into too much trouble. Furthermore, I wish to point out that much of the available material is controversial. Good minds are alined against others equally good. To illustrate the difficulties of the situation, one need go no further than the classification of lupus erythematosus. Obviously it cannot be classified on the basis of etiology, because too little is definitely known. If an attempt is made to classify it on the basis of such single factors as type of lesion, localization, duration or prognosis, difficulties immediately arise because the types overlap and interlock. Practically every one who has written