If long-term nasal congestion occurs, there are more consequences, first of all, it will lead to a significant decrease in the sense of smell, because long-term nasal congestion will lead to the breathing of the nose is not available, the various odors in the air can not enter the smell area, and you can not smell. In addition, if a long-term nasal congestion occurs, it will also affect the mental state. For example, long-term breathing through the mouth or to the irritation of the throat of the runny nose, so often inflammation will occur, which will lead to a dry throat, sore throat, some foreign body feeling or itching pain in the throat, and also cause a dry cough, hoarse voice. Once the nasal mucosa is swollen, it will inevitably cause poor drainage of the sinus openings, so inflammation of the sinuses will also occur. This kind of patients often have headache, head swelling and pain, mental atrophy, insomnia and memory loss. Therefore, the symptoms of nasal congestion need to be treated as soon as possible, for example, you can use a hot towel compress, which has a significant effect on relieving nasal congestion. If the nasal congestion is caused by a cold, the symptoms of the cold need to be treated.