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