When all your balance tests are "normal" but you still feel dizziness, imbalance, or a constant feeling of motion, you may have PPPD. Symptoms of PPPD include include nonvertiginous dizziness and unsteadiness that was increased by a person’s own motion, exposure to environments with a complex or moving stimuli (e.g., stores, crowds), and performance of tasks that required precise visual focus (e.g., reading, using a computer). Many PPPD patients are told that it's "all in their head." This is not a psychogenic disorder, and typically starts shortly after an event that causes acute vertigo, unsteadiness, dizziness, or disruption of balance.