Why do we feel dizzy when we stand up too quickly?
Concretely, they can therefore manifest themselves when lying down, getting up. Or even when turning your head quickly or raising it. These positional vertigoes "are often violent, brief (less than thirty seconds), and give the impression of a rotational movement or falling into a hole," adds the Health Insurance.
Misinterpretation of the brain
The cause is believed to be located in the upper part of the inner ear. For various reasons (trauma, infection, etc.), small crystals located within the vestibule become detached and deposited near the posterior semicircular canal. Under the influence of gravity, the position adopted would cause a part of this canal to tilt, becoming too heavy with the weight of the crystals. The brain then interprets this information as a sudden rotation of the head, causing vertigo.
The latter turns out to be benign. But generally speaking, if you experience dizziness very regularly and/or if it is accompanied by nausea or vomiting, don't hesitate to seek the advice of your doctor. For further investigation.
SudOuest
