The best replacement for panic attack is heart attack.

The best alternatives to panic attack are rated as following:
★★★★★  heart attack
★★★★  seizure
★★★  anxiety attack
★★  stroke
★★  panic disorder
★★  heart problem
★  angina
★  anxiety
★  asthma
★  hypoglycemia
★  pulmonary embolism
★  svt
★  asthma attack
★  mania
★  anxiety disorder
★  shock
★  heart attack symptoms
  allergic reaction
  anaphylaxis
  tia
  partial seizure
  brain tumor
  low blood sugar
  high blood pressure
  hyperventilation
  heart problems
  breakdown
  food allergy
  ptsd
  nervous breakdown
  hot flash
  mini stroke
  fib
  sleep apnea

Your alternative for panic attack is not listed? Suggest!
Speaking about panic attack, one probably shouldn't forget about agoraphobia.

Other search terms related to panic attack and their ratings are:
★★★★★ agoraphobia
You have in mind a companion for panic attack and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of panic attack in all years. Click on graph for more.
panic attack
heart attack
seizure