Some of the common causes of low blood pressure are as follows:
Endocrinal problems are a potential cause of low blood pressure. In addition, complications such as an underactive thyroid, parathyroid disease, low blood sugar, and adrenal insufficiency may cause low blood pressure.
- Being on Some Specific Medication
Specific drugs such as diuretics, medicines for hypertension, beta-blockers, medicines for Parkinson's disease, tricyclic antidepressants, etc., can cause low blood pressure.
- Bradycardia and Other Heart Problems
Heart conditions that can lead to low blood pressure are bradycardia (abnormally low heart rate), issues with heart valves and heart failure or heart attack. Therefore, the heart may not be able to circulate blood through the body, thus resulting in low blood pressure.
During the first 24 weeks of pregnancy, blood pressure may drop.
- Loss of Blood From Trauma or Injury
A drop in blood volume results in low blood pressure. A significant drop in blood volume occurs when blood loss due to trauma, internal or external bleeding occurs.
Septic shock occurs when bacteria leave the original infection site, enter the bloodstream, and affect the blood vessels, resulting in low bp. This condition can be life-threatening.
An anaphylactic shock is a hypersensitive reaction, often fatal, to drugs such as penicillin or a bee sting or hives. It, too, results in a fall in blood pressure.
Lack of essential vitamins such as vitamins B12 and folic acid can cause anaemia, which results in low blood pressure.