Tiredness due to low blood pressure

Tiredness and listlessness can also be caused by low blood pressure, especially if it persists for a long time. As already explained in the section on dizziness, this leads to an undersupply (underperfusion) of the brain, since the low pressure cannot transport enough blood to the brain. Fatigue is particularly noticeable during the summer with hot temperatures. When it is warm, the blood vessels expand physiologically to cool the body. However, as the blood vessels dilate, the blood pressure also drops even further, causing anemia in the brain to increase further and causing, among other things, fatigue.

Low blood pressure with high pulseTachycardia

The pulse can be equated with the heartbeat. A pulse that is too high (tachycardia) is when the heart beats more than 100 times per minute. This rapid beating of the heart can often be felt by those affected and is then called tachycardia.

The symptom combination of low blood pressure and high pulse can be caused by anemia, for example. Anemia is most often caused by an iron deficiency, then it is called iron deficiency anemia. The blood deficiency can cause low blood pressure, which means that there is a risk that organs and tissue are no longer supplied with sufficient oxygen.The heart tries to avert this undersupply and consequently beats with an increased beat frequency, which leads to a high pulse rate.

Since the body generally tries to keep the circulation stable despite low blood pressure, other causes can also cause a temporarily high pulse or palpitations. If, after sitting or standing for a long time, the blood in the veins of the legs becomes blocked, this can lead to so-called neurocardiogenic (vasovagal) syncope. This leads to a short-term loss of consciousness, as the blood remaining in the legs reduces the cardiac output.

This results in low blood pressure. To compensate for this, the pulse rate rises briefly. In addition to blood deficiency and neurocardiogenic syncope, other causes such as overdose of antihypertensive drugs, bleeding (for example in the gastrointestinal tract) or high fluid loss can also lead to low blood pressure and consequently high pulse.