He explained in an interview with aif.ru that the situation worsens at night. At this time, if there is a violation of nasal breathing (or even its absence), intracranial pressure begins to change.
In the morning, a person with this problem can be recognized by his appearance: he will have red eyes and a flushed face, the specialist noted. This is dangerous due to consequences such as the development of high blood pressure and, in the future, hypertension.
In addition, such an effect on pressure will quickly lead to the development of OSA (obstructive sleep apnea syndrome), when, as a result, the risk of heart attack or stroke increases due to the cessation of respiratory movements.
Zaitsev emphasized that it is extremely important to correctly assess the severity of the runny nose situation and not have life-threatening consequences.