I am a specialist in Respiratory Medicine with special interest in Interventional Pulmonary, Allergy-Asthma, Immunology, Tuberculosis, Pleural diseases, Covid and post covid syndromes, Sleep Medicine, critical care and other Respiratory diseases.
Sleep apnea is a potentially serious sleep disorder in which breathing repeatedly stops and starts. If you snore loudly and feel tired even after a full night's sleep, you might have sleep apnea.
The main types of sleep apnea are:
Obstructive sleep apnea, the more common form that occurs when throat muscles relax
Central sleep apnea, which occurs when your brain doesn't send proper signals to the muscles that control breathing
Complex sleep apnea syndrome, also known as treatment-emergent central sleep apnea, which occurs when someone has both obstructive sleep apnea and central sleep apnea
Symptoms
The signs and symptoms of obstructive and central sleep apneas overlap, sometimes making it difficult to determine which type you have. The most common signs and symptoms of obstructive and central sleep apneas include:
Loud snoring
Episodes in which you stop breathing during sleep — which would be reported by another person
Gasping for air during sleep
Awakening with a dry mouth
Morning headache
Difficulty staying asleep (insomnia)
Excessive daytime sleepiness (hypersomnia)
Difficulty paying attention while awake
Irritability
Causes
Obstructive sleep apnea
This occurs when the muscles in the back of your throat relax. These muscles support the soft palate, the triangular piece of tissue hanging from the soft palate (uvula), the tonsils, the side walls of the throat and the tongue.
When the muscles relax, your airway narrows or closes as you breathe in. You can't get enough air, which can lower the oxygen level in your blood. Your brain senses your inability to breathe and briefly rouses you from sleep so that you can reopen your airway. This awakening is usually so brief that you don't remember it.
You might snort, choke or gasp. This pattern can repeat itself five to 30 times or more each hour, all night, impairing your ability to reach the deep, restful phases of sleep.
Central sleep apnea
This less common form of sleep apnea occurs when your brain fails to transmit signals to your breathing muscles. This means that you make no effort to breathe for a short period. You might awaken with shortness of breath or have a difficult time getting to sleep or staying asleep.