A name, “Ms Lollobrigida”, may result in problem of the heart! (6)
I believe the answer is:
angina
'heart' is the definition.
(thesaurus)
'a name' is the wordplay.
'a' becomes 'an'.
'name' becomes 'gina' ().
'an'+'gina'='ANGINA'
'ms lollobrigida may result in problem of the' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
(Other definitions for angina that I've seen before include "heartfelt complaint?" , "Heart ailment" , "chest complaint" , "Sudden cardiac pain" , "Nag Ian about his disease" .)