2640
The patient's previous rash and the temporal relation of this event and the ingestion of phenolphthalein, as well as the similarity of this case to other reports, point to phenolphthalein as the cause of TEN in this patient.
 ( adverse event: cause ,  The patient's previous rash: Subject, rash: Subject.Disorder, TEN: Effect, ingestion of phenolphthalein: Treatment, phenolphthalein: Treatment.Drug, ingestion: Treatment.Route) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: cause ,  The patient's previous rash: Subject, rash: Subject.Disorder, TEN: Effect, ingestion of phenolphthalein: Treatment, phenolphthalein: Treatment.Drug, ingestion: Treatment.Route) 