26th April 2024

A 35-year-old man presents with a 5-year history of persistent, scaly patches on his elbows, knees, and scalp.

A 35-year-old man presents with a 5-year history of persistent, scaly patches on his elbows, knees, and scalp. The patches are well-demarcated, red, and covered with silvery-white scales. He reports occasional itching and discomfort, especially during winter months. His mother had a similar condition. He denies any joint pain. On examination, the patches are thick, with clear borders, and they bleed slightly when the scales are removed.

Which is the most likely diagnosis?