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This case is remarkable since 1) ECM developed after subcutaneous and not after intramuscular injection, 2) the injection was given by the patient himself, and 3) glatiramer acetate can induce skin necrosis as a side effect.
 skin necrosis: Effect; glatiramer acetate: Treatment; glatiramer acetate: Treatment.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 skin necrosis: Effect; glatiramer acetate: Treatment; glatiramer acetate: Treatment.Drug