Poikilodermatous lichen planus pigmentosus: A clinico‐histopathological study

Poikilodermatous lichen planus pigmentosus: A unique variant of a common disease

“…3,5 In our series, concurrent cutaneous LP lesions were found in 12% of the cases. 4 The long duration of the disease (3-25 years) is a common observation in all reported cases, 3,4 including the present case. We had previously suggested that patients with diffuse lichen planus pigmentosus for a long period maybe more liable to progress over the years into the poikilodermatous pattern.…”

“…In 2021, we have presented a series of 16 new cases of poikilodermatous lichen planus pigmentosus from Egypt. 4 We propose that this uncommon variant may have an ethnic predilection for Egyptian and Indian patients.…”

“…Poikilodermatous lichen planus pigmentosus is characterized clinically by the presence of brown/bluish gray patches (characteristic of lichen planus pigmentosus), along with poikilodermatous changes in the form of dyschromia, skin atrophy, telangiectasia, and histological features consistent with lichenoid inflammation. 4 The diagnosis can be easily missed or confused with other causes of reticulate pigmentation and poikiloderma.…”

“…We had previously suggested that patients with diffuse lichen planus pigmentosus for a long period maybe more liable to progress over the years into the poikilodermatous pattern. 4 Excessive sun exposure and positive HCV serology can also be precipitating factors in certain ethnic groups, for example, Indian and Middle East population. 2,6 To conclude, poikilodermatous lichen planus pigmentosus is a rare variant of lichen planus pigmentosus with distinguished clinical features.…”