Collocations for deteriorate - verb

badly, seriously, severely
dramatically, quickly, rapidly, sharply
slowly
gradually, steadily
significantly
further

begin to
His health began to deteriorate quite seriously.

continue to
be likely to

into
The unrest rapidly deteriorated into civil war.

Deteriorate is used with these nouns as the subject:
condition, eyesight, health, hearing, relation, relationship, service, sight, situation, weather