Evaluation of IL-38, a Newly-introduced Cytokine, in Sera of Vitiligo Patients and Its Relation to Clinical Features.

Introduction: Vitiligo is thought to be an autoimmune disorder caused by melanocytes dysfunction and depigmentation. Among different executors of the immune system in developing the disease, the role of various cytokines has been defined.

Objectives: We have focused on IL-38, the tenth member of IL-1 cytokine family with a proposed anti-inflammatory role, which has not hitherto been introduced as an anti-inflammatory factor in vitiligo.

COVID-19 infection and Leser-Trelat sign: Is there an association?

Key Clinical Message: The etiology of the Leser-Trélat sign is still unknown, it is likely that viral infections like COVID-19 can be associated with eruptive seborrheic keratosis, although the exact pathogenesis is still not clear, but this phenomenon can be due to TNF-alpha and TGF-alpha and immunosuppression condition as well as in COVID-19 infection.

Abstract: Seborrheic keratosis is a typical benign skin lesion that is almost always seen in elderly populations. The sudden increase in size or an increase in the number of these lesions is called Leser-Trelat sign, this sign is suggesting as a paraneoplastic appearance of internal malignancy.