A small growth with a rough texture is called a wart. It can appear anywhere on the body. You can also call it a blister or a small cauliflower. Caused by viruses in HPV family, the appearance of the warts depend on their location on your body. There are different kinds of warts namely flat warts, palmar warts, planter warts and pigmented warts. In most cases, warts disappear on their own in a span of 1-5 years without any treatment. But, large-sized warts can be treatment without further negligence.