This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
The only definite indication for giving systemic coicosteroids in pustular psoriasis is: 
Select and explain. 
A. Psoriatic enythroderma with pregnancy, B. Psoriasis in a patient with alcoholic cirrhosis, C. Moderate ahritis, D. Extensive lesions
D: Extensive lesions
Answer: D: Extensive lesions 
Explanation: Systemic coicosteroids are not recommended for psoriasis, because the disease tends to recur in more severe form after cessation of therapy. Systemic coicosteroids have dramatic sho term effectiveness. These can thus be used in extensive or severe form of generalized pustular psoriasis as a life saving measure when other drugs are contraindicated or ineffective. Ref: Anthony Du Vivier, Phillip H. McKee, Chapter 5, "Psoriasis", In the book, "Atlas of Clinical Dermatology", Elsivier Publication, 2002, 3rd Edition, Spain, Page 74