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: Dental
Treatment of psoriasis include all except – 
Select and explain. 
A. Retinoids, B. Methotrexate, C. Cyclosporine, D. Oral corticosteroides
D: Oral corticosteroides
Answer: D: Oral corticosteroides 
Explanation: Unstable psoriasis may be brought under control with liberal application of topical bland emollient & supportive therapy.
Oral methotrexate, retinoids, cylosporine can be used; however, systemic steroids are usually avoided for the fear of precipitating pustular psoriasis upon withdrawal.
Only in pregnancy with pustular psoriasis (impetigo gestationis), steroids are drug of choice.