One with a headache: curious uprising keeping Nigeria unsettled (10)

I believe the answer is:

migraineur

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'one with a headache' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'curious uprising keeping nigeria unsettled' is the wordplay.
'curious' becomes 'rum' (synonyms).
'uprising' is a reversal indicator.
'keeping' indicates putting letters inside (some letters kept inside).
'unsettled' indicates an anagram.
'rum' back-to-front is 'mur'.
'nigeria' anagrammed gives 'igraine'.
'mur' placed around 'igraine' is 'MIGRAINEUR'.

Can you help me to learn more?

(Another definition for migraineur that I've seen is " One suffering headaches".)

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