Some allergy symptoms (6)
I believe the answer is:
rashes
'some allergy symptoms' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rashes that I've seen before include "Skin marks caused by allergies etc" , "Eruptions of spots on the skin" , "Shares with pimply outbreaks" , "Outbreaks of spots on skin" , "Red eruptions of the skin" .)