A herniated disc may be caused by: 1  Wear and tear of the disc. As you age, your discs dry out and aren't as flexible. 2  Injury to the spine. This may cause tiny tears or cracks in the hard outer layer of the disc.
Definition of wart. 1a : a horny projection on the skin usually of the extremities produced by proliferation of the skin papillae and caused by any of numerous human papillomaviruses âcalled also verruca vulgarisb : any of numerous similar skin lesions not caused by viruses.
Warts: Liquid Nitrogen Treatment. Warts are growths on the skin caused by viruses (germs that can only be seen with a special microscope). They vary in size and appearance. Warts are most often found on the hands and feet but can be anywhere on the skin.