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.
Skin tag or wart? 1  Skin tags are smooth and soft, whereas warts tend to be rougher with an irregular surface. 2  Skin tags are knobbly and hang off the skin, whereas warts are usually flat.  Skin tags aren't contagious, but warts spread very easily, so a sudden outbreak or cluster of growths is more likely to be warts.