PIVD (Prolapsed Intervertebral Disc) Prolapsed Intervertebral Disc (PIVD), also known as a herniated disc or slipped disc, occurs when the inner gel-like core of a spinal disc (nucleus pulposus) bulges out through a tear in the outer layer (annulus fibrosus). Because it puts pressure on adjacent nerves, this condition may produce discomfort, numbness, or weakness … Continue reading PIVD: Prolapsed Intervertebral Disc