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Figures
Figure 1: Characteristic maculopapular rash and severe orolabial ulceration in a patient with overlapping Stevens–Johnson syndrome and toxic epidermal necrolysis after taking allopurinol.
Figure 2: Keratoconjunctivitis with pseudomembrane formation.
Box 1: The main causative drugs of Stevens–Johnson syndrome
Box 2: The main causative drugs of drug-induced hypersensitivity syndrome 8
Figure 3: Approximate prevalence of the human leukocyte antigen (HLA) alleles HLA-B*1502 (A) and HLA-B*5801 (B) in various geographic regions of the world. Unshaded areas represent regions where prevalence of the gene has not been determined. From Middleton D, Menchaca L, Rood H, et al. New allele frequency database: http://www.allelefrequencies.net. Tissue Antigens 2003;61:403–7.