RESUMO
A 53-year-old man having glaucoma treated with acetazolamide. After 7 days, he developed diffuse erythematous papules on both forearms and hands with multiple erosive lesions on his lips and genitalia. In the diagnosis of Stevens-Johnson syndrome, he was treated with systemic prednisolone with no sequale. Acetazolamide, which is a kind of sulfa drug and carbonic anhydrase inhibitor is commonly prediscribed by ophthalmologists. However severe side effects such as Stevens-Johnson syndrome has been overlooked. Moreover, according to recent research, HLA-B59 was known to be detected in Stevens-Johnson syndrome caused by methazolamide, which is analogous to acetazolamide. For these reasons, we emphasized the possibility of adverse drug reaction due to acetazolamide and the need caution about genetic risk factor through HLA typing.