Inspector again suffers a heart problem (6,8)

I believe the answer is:

angina pectoris

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'a heart problem' is the definition.
The answer and definition can be both states of affairs as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'inspector again suffers' is the wordplay.
'suffers' is an anagram indicator.
'inspector'+'again'='inspectoragain'
'inspectoragain' anagrammed gives 'ANGINA PECTORIS'.

Can you help me to learn more?

I've seen this clue in The Times.

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