Arthur Blank, a co-founder of Home Depot and owner of the Atlanta Falcons. His familyâs foundation has donated $20 million for community improvements near the Falconsâ new stadium. Credit Kevin D. Liles for The New York Times.
A diagnosis of unstable blood pressure can be caused by a multitude of factors, illnesses and disease processes. Unstable blood pressure can provoke a variety of symptoms, including but not limited to dizziness, shortness of breath, instability, fainting and erratic heart rhythms.
Underlying causes of low blood pressure. 1  Low blood pressure can occur with: 2  Prolonged bed rest. 3  Pregnancy. During the first 24 weeks of pregnancy, itâs common for blood pressure to drop. 4  Decreases in blood volume. A decrease in blood volume can also cause blood pressure to drop.