Toxic epidermal necrolysis (TEN) is a rare disease that is defined by extensive detachment of full-thickness epidermis. It most often is related to an adverse drug reaction. The drugs implicated in most cases of TEN have been sulfonamides, anticonvulsants, allopurinol, and some of the conventional nonsteroidal antiinflammatory agents. We describe a patient who developed a generalized desquamating rash after therapy with celecoxib.