Acute
New onset, likely concerning.
Opposite chronic
Acute on chronic
New exacerbation of a chronic condition
Chronic
Long-standing, constant
opposite acute
Fluctuating
Symptoms always present but changing in severity; never resolving
Intermittent
Sx that completely resolve at times, but continue to return repeatedly
Paroxysmal
Occasional, sporadic, transient
Resolved
Gone, no longer existing
Transient
Resolving spontaneously after onset