<prompt> The only definite indication for systemic coicosteroids in a case of pustular psoriasis is?Psoriatic Erythroderma with pregnancyPsoriasis in a patient with liver cirrhosisPsoriatic ahritis of moderate degreePresence of extensive lesions  <response>: Systemic coicosteroids - Not recommended for psoriasis, because the disease tends to recur in more severe form after cessation of therapy. Have sho term effectiveness. Can be used in extensive or severe form of generalized pustular psoriasis as a life saving measure when other drugs are contraindicated or ineffective. 