case_images: PMC11750519_01
case_images: FDE on left lower back presenting as a dusky, violaceous, hyperpigmented, well-circumscribed oval patch with erythematous border. Similar lesions were present on the buttock and abdomen. FDE, Fixed drug eruption.
case_images: gr1.jpg
case_images: PMC11750519_01_gr1.jpg
case_images: fig1
case_images: On physical examination, the patient had multiple dusky hyperpigmented round patches with erythematous borders on her buttock and abdomen (Fig 1).
case_images: Lichenoid interface dermatitis with significant pigment incontinence. Numerous necrotic keratinocytes were noted throughout the epidermis with conspicuous pigment incontinence seen throughout the superficial dermis (hematoxylin and eosin 100x).
case_images: gr2.jpg
case_images: PMC11750519_01_gr2.jpg
case_images: fig2
case_images: A 4-mm punch biopsy was performed on a lesion on the right buttock, and histopathological examination revealed lichenoid interface dermatitis, consistent with an FDE (Fig 2).