Drug repurposing of dermatologic medications to treat coronavirus disease 2019: Science or fiction?

Abstract

No pharmaceutical products have been demonstrated to be safe and effective to specifically treat coronavirus disease 2019 (COVID-19); therefore, the therapy administered to infected patients remains symptomatic and empiric. Alongside the development of new, often high-cost drugs, a different tactic is being applied in parallel, investigating long-established, inexpensive medications originally designed for a variety of diseases to study their potential in treating COVID-19. The skin is the largest organ of the human body. With more than 3,000 skin conditions identified, the specialty of dermatology offers a rich armamentarium of systemic therapeutic agents aimed to treat the various chronic immunologically mediated, metabolic, infectious, occupational, inherited, or paraneoplastic dermatoses. Dermatologists have extensive experience with many drugs that have demonstrated promising in vitro antiviral action (directly targeting the viral replication). Many of these drugs have been used as nonspecific immunosuppressive strategies, such as glucocorticoids, synthetic antimalarials, colchicine, or other immunomodulators, and a number of targeted therapeutics have been directed at controlling hyperinflammatory processes similar to the “cytokine storm” associated with COVID-19 infection. We discuss several dermatologic drugs that have already been used or may have a promising role in the treatment of COVID-19.

Diagnosis and Treatment Challenges of an Atypical Case of Pemphigus vulgaris During the COVID-19 Pandemic

“…After five months without signs of disease activity, it is decided to eliminate corticosteroids from the treatment regimen, keeping dapsone as the only treatment, without the appearance of new lesions at the last presentation. Moreover, in the context of the current pandemic, in which conventional immunosuppressive treatments and targeted therapies lead to altered immune mechanisms and an increased risk of COVID infection, dapsone therapy not only is not a risk factor but has been shown to even had a protective role against severe forms, possibly due to its antineutrophilic effect [ 19 ].…”