There is no definite time for how long neurogenic hypertension usually lasts, and it usually returns within minutes after the stress has abated.
Neurogenic hypertension usually stems from something stressful, such as tension, excitement, strenuous exercise, fear, and other stressful situations. These causes cause an increase in sympathetic excitability and an increase in the secretion of excitatory hormones such as catecholamines, leading to a temporary increase in blood pressure, and how long the resulting hypertension lasts is variable.
The duration of hypertension is not fixed. If the elevated blood pressure is caused by anxiety, the duration is relatively short, and the blood pressure will return to normal quickly after removing the state of anxiety. However, if it does not recover for a long time and lasts for several days, it is likely to be primary hypertension and requires prompt medical attention and medication.