• Obstructive sleep apnoea is the most common type of sleep apnoea. It occurs when the soft tissue in the back of your throat relaxes during sleep, causing a blockage of the airway (as well as loud snoring).
  • Central sleep apnoea is a much less common type of sleep apnea that involves the central nervous system, rather than an airway obstruction. It occurs when the brain fails to signal the muscles that control breathing. People with central sleep apnea seldom snore.
  • Complex sleep apnoea is a combination of obstructive sleep apnea and central sleep apnea.