rapid onset
Swift initial appearance
Rapid onset describes symptoms, effects, or conditions that begin quickly after exposure or trigger.
Medical contexts use it frequently: rapid-onset diabetes, a drug with rapid onset of action.
The phrase emphasizes speed of development rather than severity—something with rapid onset may be mild or serious, but it doesn't take long to appear.
- flash floodRapid overflow from storms
- acuteIntensely severe or perceptive
- avalancheRapid mountain snow collapse
- anaphylaxisSevere systemic allergic reaction
- seizureForcible taking or convulsion
flare-up · stroke · heart attack · code blue · fast-acting · propofol · outbreak · cold snap · tachycardia · paroxysm · fulminant · hypoglycemia · sugar crash · panic attack · fight or flight · system crash · power outage · exacerbation
- choleracholera vaccine, diarrhea, rehydration, waterborne disease, contaminated water
- fast-actinginstant, quick, swift, speedy, immediate
- DMT visionsbreakthrough, hyperspace, entities, geometric patterns, fractals
- outburstsoutburst, burst, eruption, tantrum, meltdown