MRCP2-0967

A 68-year-old man presents with a rash on his hands and feet. He reports tingling in the affected areas but no pain. He has a history of colorectal cancer and is currently undergoing palliative chemotherapy with capecitabine and oxaliplatin. On examination, he appears frail and has patchy palmar erythema with mild desquamation. What is the likely diagnosis?