Can someone have pressure sores and not be aware of it? Is it possible for an alert individual to develop a pressure sore and not realize it? .

No pressure, no sore. Is the general rule. People with normal sensation and mobility never stay in one position for too long. Pressure over a bony prominence can cause skin injury in as little as two hours. That is why debilitated patients and those with spinal cord injuries are placed on pressure-relieving mattresses, turned and repositioned frequently and checked for the presence of early pressure sores frequently.