Linear focal elastosis

Abstract

Linear focal elastosis (LFE) is an uncommon, benign, acquired elastotic condition with uncertain pathogenesis. It is characterized clinically by asymptomatic, multiple, yellowish, elevated, irregularly indurated, striae-like lines or bands distributed horizontally across the lower and middle part of the posterior trunk. The histopathological hallmark of LFE is a focal increase of elastic fibres in the dermis. The differential diagnosis is varied, and striae distensae is the closest mimic of LFE. Response of LFE to treatment is often poor. The focus of this article is to provide insights into this condition for dermatologists.

Linear rash in an 11‐year‐old girl

“…Striae distensae is characterized by linear, pink‐white lesions, similar to that in our patient, that are common in the abdomen, thighs, and arms 6 . However, lesions vary from palpable to depressed plaques and typically present in the setting of pregnancy, chronic steroid use, or weight gain 6 .…”

“…Striae distensae is characterized by linear, pink-white lesions, similar to that in our patient, that are common in the abdomen, thighs, and arms. 6 However, lesions vary from palpable to depressed plaques and typically present in the setting of pregnancy, chronic steroid use, or weight gain. 6 Furthermore, the presence of an atrophic epidermis and reduced elastic fibers on histopathological examination can differentiate striae distensae from LFE, where an increase in elastic fibers is typically observed.…”