The brand new coronavirus pandemic poses question and challenges for dermatologists. new computer virus SARS\CoV\2 as it is very similar to the one that caused the SARS outbreak (SARS\CoVs). 1 The ongoing SARS\CoV\2 or COVID 19 HO-3867 pandemic is a great concern for general public health and Italy is one of the countries that has the largest outbreak outside mainland China with increasing number of infected people and deaths. 2 Psoriasis is an immune mediated disease that affects almost 3% of populace. It is treated focusing on effector cytokines identified as important in the pathogenesis of this disease: TNF alpha, IL\12\23, IL\17 and IL\23. The usual approach to this disease is definitely to suggest continuous treatment for individuals since alteration of restorative schedule could enhance the risk of immunogenicity and thus treatment failure. 3 Recently some concern over the possibility that cytokine directed immunosuppressive treatment may be a risk element for SARS\CoV\2 illness in psoriasis individuals has been indicated. 4 The pandemic scenario changes very rapidly with fresh data within the medical and serological characteristics of affected instances being reported every day. We believe that is definitely time to review more thoroughly the available data in the literature, in order to give a clearer suggestions to dermatologist. We screened PubMed database with the keywords HCoV, NCoV, coronavirus, SARS\CoV, MERS\CoV, 2019\nCoV, SARS, MERS, pathogenesis, COVID\19, Immunosuppression, psoriasis, till March 20, 2020. We analyzed the results in order to record probably the most relevant evidences on related pathogenetical mechanism of severe disease and risk factors for SARS, MERS and SARS\CoV\2, moreover we searched for evidences that immunosuppressive condition might predispose to more severe ailments in SARS\CoV\2 infected individuals. 2.?Outcomes 2.1. Lesson from days gone by Associates of Coronaviruses have caused two major outbreaks in the recent past. SARS\CoV caused an epidemic in 2002 to 2003 during which almost 8 400 individuals have become infected with an overall mortality HO-3867 rate of almost 10%. 2 In 2012 a similar coronavirus (MERS\CoV) caused an epidemic mainly in the Middle East area. From 2012 to 2018 it infected about 2200 people with a death rate of 36%. 5 Concerning the pathogenesis of SARS and MERS it seems that a Th1 activation associated with the production of high levels of proinflammatory cytokines may play a pivotal part in the disease. Cytokines such as IL\1, IL\6 and IL\12, and chemokines such as IL\8, CCL2 and CXCL10 were elevated in SARS individuals 6 and diminished in individuals that recovered, accompanied by a powerful anti\disease antibody response. 7 In MERS a worst outcome was associated with high levels of IL\10 and CXCL10 and with high levels of IL\17 and IL\23 8 . Moreover proinflammatory cytokines genes such as IL\1, IL\6, TNF, and chemokines such as CXCL1 Gsk3b and CCL20, were found to be overexpressed in SARS CoV illness by microarray datasets analysis. 9 The importance of the part of massive launch of proinflammatory cytokines (cytokine storm) is definitely underlined by the fact that there is a significant difference in the concentration of serum of IFN\, IL\1, IL\6, IL\12, and TGF and of chemokines such as CCL2, CXCL10, CXCL9, and IL\8 between severe disease SARS individuals compared to uncomplicated SARS individuals. 8 Lethality in SARS was directly correlated with the serum concentration of IFN and and with up legislation of IFN\activated genes such as for example CXCL10 and CCL2. Furthermore, sufferers with serious disease acquired low degrees of anti\inflammatory cytokine HO-3867 IL\10. 10 Both in SARS and MERS it appears that the severe nature of the condition is dependent from viral insert in the airways, comorbid and age condition. No comment continues to be available, in books, on concomitant immunosuppression in these sufferers.11, 12.