![]() They also say that 14% of patients have been found to have a family history of it, so there may be a genetic component. The American Sleep Association discusses studies showing that there’s a similarity in the jaw sizes of people who have it – they all apparently have small jaws. Unfortunately, there just hasn’t been as much research on catathrenia as many other sleep disorders, especially those that are thought to have more serious consequences if unmanaged. The exact cause of catathrenia is still unknown. When forming a diagnosis, a medical professional would want to rule out the above possibilities, particularly serious conditions like apnea and epilepsy. Related to any other breathing disorder.Moaning that occurs during epileptic seizures.Despite the fact that catathrenia can sound more vocal than snoring, it isn’t the same as sleep talking either. ![]() With catathrenia, the pause happens after breathing in. With apnea, the pause happens after breathing out. Even though both disorders involve a pause in breathing, there’s a key difference. Interestingly, researchers in 2010 found that the sound produced in catathrenia is laryngeal, while snoring is guttural. However, some people do snore on the exhale, so this isn’t a perfect way to tell the difference. Catathrenia takes place when exhaling, whereas snoring usually takes place when inhaling. So it’s important to understand that it isn’t any of the following: What Catathrenia isn’tĪs it’s not a very common sleep disorder, catathrenia is sometimes confused with other sleep disorders or health issues. Some people report feeling sleepy or tired during the daytime, but it’s not clear if that’s a direct result of their catathrenia. Other than being a ‘social nuisance’, sleep researchers consider catathrenia to be a benign condition that doesn’t cause any other negative effects. In the hundreds of comments below this article that people have written since it was first published, there are many stories of coping with the embarrassment or stress of the noise. Unless their partner can sleep through the noise, it can become a source of frustration for both people. People with catathrenia may experience it for many years, and research suggests that some may have regular episodes during that time. This can be disturbing or annoying for other people in the household who hear it, and embarrassing for the person making the noise when they are told what they were doing in their sleep. The noise made can be very loud, and for some people can sound sexual in nature. Benign, but sometimes a nuisance or embarrassing And in the second, 4 of 1,004 patients (0.4%) who underwent a sleep study in Norway had it. In the first, just 25 of 15,052 patients (0.17%) who went to a sleep center in Japan during a 10 year period had catathrenia. The researchers also discussed two interesting studies that demonstrate how uncommon it is. ![]() ![]() So much so, that researchers in the USA suggested that many otolaryngologists and sleep specialists are unfamiliar with it. How common is catathrenia?Ĭatathrenia is thought to be relatively rare. Some researchers further suggest there could be sub-types of catathrenia, for example depending on whether the noise made on each exhale is short or long. Research has shown that catathrenia usually occurs during the Rapid Eye Movement (REM) stage of sleep during the second part of the night, but can occur in other sleep stages too. At the end of the groan, the person might make a secondary noise like snorting, and it’s possible that they wake themselves up too. The noise emitted was found in a study to last between two and 50 seconds on average. When they exhale, they might make a groaning, moaning, or shrieking noise. Sometimes known as nocturnal groaning, catathrenia falls under the category of sleep-related breathing disorders in the third edition of the International Classification of Sleep Disorders (ICSD-3).ĭuring an episode of catathrenia, people will typically inhale deeply while sleeping and then hold their breath for a short while. It would need a medical diagnosis to be completely sure, but if this sounds familiar, it could be that you have catathrenia. “You know, that weird groaning sound that goes on for ages. Has anyone ever told you that you make strange noises in your sleep? Perhaps your partner intentionally wakes you up because the noise is disturbing them, and a conversation along these lines ensues: ![]()
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