Question: A patient is started on a new medication. Approximately 1 week after the new medication is initiated, the patient has a new onset non-productive cough and general feeling of weakness. Upon presentation to the ER, the patient is febrile and is noted to have several large bullae with sloughing of skin around the abdomen (37% total body surface area affected). Based on this case study, what is the most likely diagnosis and what is the underlying disease process of this condition? Note: You must get the correct diagnosis to get credit for this question.