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2.  problems with the quality, timing, and amount of sleep, which result in daytime
distress and impairment in functioning.

3.  Insomnia
 restless legs syndrome
 Narcolepsy
 sleep apnea.

4.  Fatigue
 decreased energy
 Irritability
 Lack of attention
 Poor decision making skills
 Disruptive mood swings
 Depression
 anxiety.