I went to a dermatologist about (what I now know was an allergic reaction to a drug), but it was already beginning to clear up. The doctor asked if he showed me pictures, whether I could ID what it looked like at its worst. The rash was on my neck. The photos were of male genitalia.
A question from Reddit that I'll answer here:
"What's the most unhinged thing a doctor has said to you with a straight face?"