Having fever symptoms and rash? (9)
I believe the answer is:
hotheaded
'rash?' is the definition.
(I know that rash can be written as hotheaded)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hotheaded that I've seen before include "rash" , "Irresponsible" , "Explosive" .)