A painful head and dull throb in the tongue (6)
I believe the answer is:
apache
'the tongue' is the definition.
(Apache is an example)
'a painful head and dull throb' is the wordplay.
'head' indicates taking the first letters.
'and' says to put letters next to each other.
'dull throb' becomes 'ache' (I've seen this in another clue).
The first letter of 'painful' is 'p'.
'a'+'p'+'ache'='APACHE'
'in' acts as a link.
(Other definitions for apache that I've seen before include "American Indian - French gangster" , "American Indian once found in Paris" , "Hooligan in Paris" , "N American Indian tribe or old Paris ruffian" , "on the streets of Paris" .)