Patient aged 57 years, complains of difficulty in falling asleep for the past 4 months. The patient also has a history of major depressive disorder and is under treatment for the same. The patient is suffering from:

• Chronic Primary Insomnia
• Acute Secondary Insomnia
• Chronic Secondary Insomnia
• Acute Primary Insomnia

• Higher metabolic rate
• Higher level of plasma cortisol
• Hyperarousal during daytime
• Decreased heart rate variability

• Trouble falling asleep on going to bed
• Trouble maintaining sleep
• Waking up too early and then falling asleep immediately
• Waking up too early and finding it difficult to fall asleep again

• BIC sleep-onset
• BIC limit-setting
• BIC-combined type
• BIC-chronic type

• Chronic insomnia
• Short-term insomnia (Acute insomnia)
• Mixed insomnia
• Co-morbid insomnia