Mouth warts are caused due to the Human Papilloma Virus which is a kind of virus attacks various parts of the body, hands, genitalia and feet. This is contagious and will spread among the sexually active persons. This is unpleasant and caused due to unhealthy sex practices. People infected don’t have any discomfort and it is actually not harmful. This is harmful when it appears in the mouth. Though it is not a harmful disease this will come over and over as the virus will stay in the body once infected. Though there are many creams which will remove the warts it is better to consult a dermatologist.