What condition is characterized by dizziness when moving from lying down to standing?

Dizziness when moving from lying down to standing is primarily associated with postural hypotension, also known as orthostatic hypotension. This condition occurs when there is a sudden drop in blood pressure when a person stands up from a sitting or lying position. The body normally compensates for this shift in posture to maintain consistent blood flow to the brain. However, in cases of postural hypotension, this compensatory mechanism fails to work effectively, leading to symptoms such as dizziness or light-headedness.

Understanding postural hypotension is crucial, especially in caring for individuals who may be at higher risk, such as older adults or those with certain medical conditions or medications that affect blood pressure. The other options do not directly relate to the symptoms experienced when moving from a supine position to standing, highlighting the uniqueness of postural hypotension in this context.