The best replacement for sleep paralysis is demons.

The best alternatives to sleep paralysis are rated as following:
★★★★★  demons
★★★★  paranormal
★★★  seizure
★★★  demonic attack
★★  cataplexy
★★  seizures
★  demon
★  alien abduction
★  alien abductions
★  obe
★  night terrors
★  sleep apnea
★  demonic possession
★  lucid dream
★  astral projection
  nocturnal seizure
  lucid dreaming
  jinn
  old hag syndrome
  incubus

Your alternative for sleep paralysis is not listed? Suggest!
Speaking about sleep paralysis, one probably shouldn't forget about hallucinations.

Other search terms related to sleep paralysis and their ratings are:
★★★★★ hallucinations
★★ hypnagogic hallucinations
★ narcolepsy
★ lucid dreams
You have in mind a companion for sleep paralysis and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sleep paralysis in all years. Click on graph for more.
sleep paralysis
demons
paranormal