case_images: PMC11824909_01
case_images: Dermatoses that affect a, b, and c) posterior trunk, which affects the left thoracic and lumbar region, d) as well as the abdomen in left quadrates, characterized by multiple plaques of 5 to 10 mm that in some areas tend to converge forming plaques of up to 20cm in diameter, atrophic, oval in shape, erythematous-brown in color, with depressed "cliff" edges.
case_images: cureus-0017-00000077439-i01.jpg
case_images: PMC11824909_01_cureus-0017-00000077439-i01.jpg
case_images: FIG1
case_images: The lesions were characterized by multiple plaques ranging in size from 5 to 10 mm with depressed "cliff-edge" borders (Figure 1).
case_images: Skin biopsy using a 3mm punch with Hematoxylin and Eosin staining. In the upper sections, a panoramic view shows a) Epidermis with hyperpigmentation of the basal layer and b) mild orthokeratotic hyperkeratosis. In the lower sections at 40x magnification, c) and d) in the dermis, there is mild perivascular, perifollicular, and periadnexal infiltrate predominantly composed of lymphocytes, with preserved appendages.
case_images: cureus-0017-00000077439-i02.jpg
case_images: PMC11824909_01_cureus-0017-00000077439-i02.jpg
case_images: FIG2
case_images: Biopsy was also performed showing changes suggestive of APP (Figure 2).
case_images: Posterior thoracic region at the dorsal level: a) prior to medical treatment and b) after medical treatment showing remission of erythema, attenuation of "depression" and "cliff edges", similarly observed in the abdominal region in the left quadrant: c) prior to medical treatment and d) after medical treatment.
case_images: cureus-0017-00000077439-i03.jpg
case_images: PMC11824909_01_cureus-0017-00000077439-i03.jpg
case_images: FIG3
case_images: There were no new lesions or increase in the size of existing lesions in the following six months after treatment adjustment (Figure 3).