Question: what is the best medicine to treat psoriasis?
Answer: Corticosteroids. These drugs are the most frequently prescribed medications for treating mild to moderate psoriasis. ... 
Vitamin D analogues. ... 
Retinoids. ... 
Calcineurin inhibitors. ... 
Salicylic acid. ... 
Coal tar. ... 
Goeckerman therapy. ... 
Anthralin.