Medical eponyms are diseases named after a person or place such as Ebola virus named after a river in Zaire where an outbreak of Ebola occurred in 1976.
Parkinson disease and Hodgkin disease are examples of eponyms named after persons, both physicians associated with identifying the diseases.
The modern trend is to use the non-possessive form of eponyms as in Crohn disease instead of Crohn’s disease. The “d” in disease remains lower case. The crossword answers are in the non-possessive form.