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 are tumors or growths that occur on the skin after the keratin component grows too fast. This is usually brought about by a virus called Human Papilloma Virus, otherwise commonly known as HPV. They are very contagious and can easily be passed from one person to another via skin to skin contact.