Rash outbreak? (8)
I believe the answer is:
epidemic
I believe this is a double definition.
'rash' is the first definition.
(I've seen this before)
'outbreak?' is the second definition.
(I know that epidemic can be written as epidemic)
(Other definitions for epidemic that I've seen before include "Prevailing" , "Fast food item" , "medical emergency" , "health emergency" , "lot of disease" .)