CNET’s guide goes over the different types of sleep apnea, causes, risk factors, and symptoms to help people understand sleep apnea.

The most common symptom of sleep apnea is snoring, but snoring on its own isn’t always indicative of sleep apnea. Snoring followed by silent pauses, gasping or choking sounds is likely a sign of sleep apnea.

Because sleep apnea wakes you up frequently throughout the night (even if you don’t notice it), you can suffer from symptoms of sleep deprivation, such as daytime fatigue, difficulty concentrating, unintentional napping and irritability or mood swings.