What is “Xeroderma Pigmentosum”?
Simply put, it’s a problem with exposure to sunlight or, the genetic disorder in which an individual is unable to repair skin from UV ray damage.
Edgar repeated this term (with further explanation) to the Hammet cult, re-enforcing their trust in him through his apparent wisdom. The unfortunate thing is that the information could easily be discovered and repeated in parrot fashion by utilizing simple internet searches.
His deliberate avoidance of light helped enhance his psychological blocks and created real daylight sensitivity, especially for his eyes.