The most common symptoms of warts and verrucas are small skin growths that look like a cauliflower and are rough to the touch. Most warts are raised with a hard edge and a softer inner portion, but some warts appear flat and smooth. Warts are usually round or oval and average 1-10 mm in diameter. Warts and verrucas often appear lighter or darker than the surrounding skin, and the colour can range from white to brown-grey.
Sometimes small black dots can be seen in the center of the wart. These dots are tiny capillaries that supply the wart with blood and are typically a sign that the wart is about to disappear. Warts are caused by the human papilloma virus (HPV), which can enter your body through tiny cuts or scratches. The incubation period for the infection can vary, taking anything from two to six months (or even years in extreme cases) for the symptoms of warts and verrucas to show. Although warts are usually harmless they can be embarrassing and cause emotional distress, especially for children and young adults. In some cases, they can also become painful.