The best replacement for hypersomnia is insomnia.

The best alternatives to hypersomnia are rated as following:
★★★★★  insomnia
★★★★  narcolepsy
★★★★  hypersomnolence
★★★  hypersomnia
★★  somnolence
★★  chronic fatigue syndrome
★  chronic fatigue
  idiopathic hypersomnia

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

Other search terms related to hypersomnia and their ratings are:
★★★★★ sleep apnea
★★★★ apnea
★★★ osa
★ obstructive sleep apnea
You have in mind a companion for hypersomnia and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hypersomnia in all years. Click on graph for more.
hypersomnia
insomnia
narcolepsy