Illness indicator (7)

I believe the answer is:

symptom

(Other definitions for symptom that I've seen before include "Indicator of disease" , "It indicates disease" , "Troublesome sign" , "Sign of illness" , "sign all's not well" .)

I've seen this clue in the King Feature Syndicate.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.