Lisa has developed a rash, and after looking at it today, the oncologist said that he thinks that it's "shingles" (adult recurrence of chicken pox)... which isn't uncommon after extended chemotherapy. List went to go see a dermatologist afterwards, who told her that it was not shingles, but just dermatitis and gave her a cream for it. That's the preferred diagnosis, since right now Lisa doesn't have any symptoms other than the rash, and if it's shingles then an itch and sometimes severe pain follows the initial rash.