Even fabric out having this condition after long confinement (10)

I believe the answer is:

cabinfever

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'this condition after long confinement' is the definition.
I know nothing about this answer so I can't tell whether this works.

'even fabric out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'even'+'fabric'='evenfabric'
'evenfabric' anagrammed gives 'CABINFEVER'.

'having' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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