Depending on the type of sleeping problem, symptoms can include:

• Lying awake for a long time at night before getting to sleep.
  
• Waking up several times in the middle of the night.
  
• Waking up early in the morning (and not being able to get back to sleep).
  
• Feeling tired and not refreshed by sleep.
  
• Inability to function properly during the day, especially having difficulty concentrating.
  
• Irritability due to lack of sleep.