Mental or Behavioral Dysfunction
initial insomnia
in·i·tial in·som·ni·a
Definitions related to initial insomnia:
  • Falling asleep with difficulty; usually seen in anxiety disorder. Compare with middle insomnia and terminal insomnia.
    Sadock's Comprehensive Glossary of Psychiatry and Psychology
    BJ Sadock Titles Press, 2012
  • (sleep onset insomnia) Difficulty initiating sleep, that is, increased sleep onset latency.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2021
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