Concept Difficulty in getting to sleep Easy to wake up and unable to sleep again after waking Dream disturbing sleeping Sleeplessness during the whole night Signs and symptoms:insomnia, dream disturbing sleeping,dizziness headache,failing memoryConcept Difficulty in getting to sleep Easy to wake up and unable to sleep again after waking Dream disturbing sleeping Sleeplessness during the whole night Signs and symptoms: insomnia, dream disturbing sleeping, dizziness, headache, failing memory