Aggravated itches? Male's in pharmacy (7)
I believe the answer is:
chemist
'pharmacy' is the definition.
(thesaurus)
'aggravated itches? male's in' is the wordplay.
'aggravated' indicates an anagram.
'male' becomes 'm' (common abbreviation).
'in' means one lot of letters goes inside another.
'itches' is an anagram of 'cheist'.
'cheist' enclosing 'm' is 'CHEMIST'.
(Other definitions for chemist that I've seen before include "Nobel, say" , "Drugs/toiletries shop" , "Pharmacist, apothecary" , "Pharmacist, professional who dispenses drugs etc" , "He dispenses prescriptions" .)