The best replacement for syncope is seizure.

The best alternatives to syncope are rated as following:
★★★★★  seizure
★★★★  fainting
★★★★  vertigo
★★★★  presyncope
★★★★  near syncope
★★★★  epilepsy
★★★  tia
★  dizziness
★  anaphylaxis
★  collapse
★  vasovagal
★  loss of consciousness
★  seizures
★  orthostatic hypotension
★  sudden fainting
★  vasovagal episode
★  syncope
★  apocope
★  cardiac arrest
  neurocardiogenic syncope
  deglutition syncope
  pots
  narcolepsy
  vasovagal attack
  pre syncope

Your alternative for syncope is not listed? Suggest!
Speaking about syncope, one probably shouldn't forget about incontinence.

Other search terms related to syncope and their ratings are:
★★★★★ incontinence
★★★★ convulsions
★ loss of bladder control
valsalva
You have in mind a companion for syncope and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of syncope in all years. Click on graph for more.
syncope
seizure
fainting