The North Belfast MP was in the party's offices at the House of Commons when the episode unfolded just before Prime Minister's questions.
He was taken to a nearby hospital.
It is understood Mr Dodds (54) underwent a series of tests but has now been given the all-clear.
Mr Dodds - a former finance minister in the Northern Ireland Executive - is married to sitting DUP MEP Diane Dodds.
A Cambridge graduate, he has been a Member of Parliament for North Belfast since 2001.
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