How did Paul describe himself and his condition at the beginning of Part 2, Section 4?

Paul described himself as very thin. He had lost 40 pounds since being diagnosed, 15 in the last week. His hair had thinned a lot. He was awake and alert, but withered. He could see his bones against his skin. At home holing his head up was tiring. Lifting a glass of water required both hands. He wasn't able to read.