Concealed by frail men, troubling illness (7)

I believe the answer is:

ailment

'illness' is the definition.
(an ailment is an illness or health problem)

'concealed by frail men troubling' is the wordplay.
'concealed by' indicates a hidden word.
'AILMENT' can be found hidden inside 'frail men troubling'.

(Other definitions for ailment that I've seen before include "Sickness" , "problem" , "Bodily disorder or disease" , "Tim Alen has an odd indisposition." , "Complaint, affliction" .)

I've seen this clue in The Daily Express.

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