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Difficulty obtaining sleep for a prolonged period of time.
[G., sleeplessness]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
obscura (Walker) 5857 Dolophilodes distinctus (Walker) 4 Wormaldia shawnee (Ross) (b) 11 Family Phryganeidae 58 Agrypnia vestita Ross 17 Phryganea sayi Milne 26 Ptilostomis ocellifera (Walker) 6 P.