The shoulder and hip joints are the only ball-and-socket joints in the human body due to the need for great motion at the end of the bodyâs limbs and the vast amount of musculature needed to move and support such flexible joints.
A sudden drop in blood pressure can be caused by a rapid change in health or certain medications. It may also signify an underlying medical problem such as thyroid issues. As long as there are no symptoms, low blood pressure in an otherwise healthy person generally is not a concern.
In this type of low blood pressure, there is a drop of 10 to 20 points of blood pressure when a person moves from a sitting or supine (flat) position to a standing position, Pacold says. It causes a sudden sense of lightheadedness and can be due to a heart that is starting to have trouble compensating..