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.
A answered. Common warts are small skin growths caused by one type of the human papillomavirus (HPV). Generally, warts are harmless. Sometimes they go away on their own, and sometimes they are removed, although they don't generally cause problems if left untreated. If you do want to get rid of warts, there are many available options. You can treat warts at home with an over-the-counter salicylic acid treatment.