The medical term shock refers to the organs and tissues of the body not receiving a sufficient flow of blood. As a result of the imbalance of oxygen supply and demand, a buildup of waste products occurs and can cause damage to the organs.hysiological (circulatory) shock can be caused by any condition that reduces the blood flow. There are various types of physiological shock and symptoms include: 1  Cardiogenic shock occurs when the heart is severely damaged by heart attack or heart failure.