Nasal ventilation disorder caused by deviated nasal septum can also cause sleep apnea hypopnea syndrome in adults. The blocking plane is located in the nasal cavity. The main clinical manifestations are nasal congestion with mouth breathing and sleep snoring. In severe cases, sleep apnea and asphyxia may occur, accompanied by dry throat in the morning, daytime sleepiness and memory loss, and in severe cases, daily life and work may be affected. Ok, let's take a look at the expert's answer: 1, trauma: trauma is an important cause of this disease, which mostly occurs in childhood, and the history of trauma has often been forgotten. At that time, all components of the nasal septum were underdeveloped, so there were no symptoms. Later, with the increase of age, it gradually developed into nasal septum deviation, and adults can also cause nasal septum deviation or nasal septum cartilage dislocation due to trauma. 2, dysplasia: the nasal septum was originally composed of several pieces of cartilage, and later ossified separately, only a bony nasal septum appeared. In the development process, due to various reasons, the development of bone and cartilage is unbalanced, resulting in deformity or deviation, or the formation of bone spurs or ridges at the junction of bone and cartilage in the nasal septum. Patients with adenoid hypertrophy, breathing from small mouth and high arch of hard palate have limited development of nasal septum, and nasal septum deviation may also occur. 3, compression factors: tumor or foreign body compression of the nasal cavity can make the nasal septum biased to one side. Deviation of nasal septum can cause alternating or persistent nasal congestion, headache, nosebleeds and purulent nose. Patients with the above symptoms should undergo nasal septum deviation surgery in time. I hope reading the above introduction will help you. If you have any questions or want to know more about plastic surgery, please consult Dongguan Zhimei plastic surgery experts now and pay more attention to our website.