The dear doctor, than can be caused or called small (Since the childhood) a difference between...

[Voland777]

The dear doctor, than can be caused or called small
(Since the childhood) a difference between the bottom and top borders of pressure. 100 110 on 80. I can add, that in stressful situations there are pains in heart and a tachycardia.

[Zholudev A.A.]

It can be physiological norm or rate. Besides I advise to survey kidneys.