Sleep apnoea is a common condition in which a person stops breathing repeatedly during sleep. There are several synonyms for this disorder, including obstructive sleep apnoea (OSA), central sleep apnoea (CSA), and mixed sleep apnoea. OSA refers to the most common type of sleep apnoea, which is caused by a blockage in the airway, while CSA is a less common form that is caused by the brain not sending the correct signals to the muscles that control breathing. Mixed sleep apnoea is a combination of both OSA and CSA. Regardless of the type of sleep apnoea, it is important to seek treatment to prevent the negative health consequences associated with the disorder.