Crossword Genius

Any sharp pain initially will upset and bother a child (5,4)

Ross

I believe the answer is:

nappy rash

I'm a little stuck... Click here to teach me more about this clue!

But I can't explain it at all! Could you help me understand?

(Other definitions for nappy rash that I've seen before include "Baby's discomfort" , "wet spots" .)

I've seen this clue in The Hindu.
Want a hint initially instead of a full solution? Install my app