MRCP2-1021
A 76-year-old man with learning difficulties presents with an acute exacerbation of congestive cardiac failure. He is currently taking bumetanide 2 mg TDS, carvedilol 25 mg OD, perindopril 4 mg BD, and spironolactone 100 mg OD. During examination, severe raised plaques of psoriasis are observed on his chest, elbows, knees, and scalp. The patient reveals that he has been using topical creams for years but has not seen any improvement and did not seek medical advice due to embarrassment. What is the recommended treatment for his psoriasis?