How to distinguish plantar warts and corns

Plantar warts and corns can be distinguished by etiology, appearance, growth site, quantity, symptoms, development speed, infectivity, etc. 1. Etiology Plantar warts are caused by human papilloma virus (HPV) infection and are infectious; corns are mainly caused by long-term friction and pressure. 2. Appearance plantar wart surface rough, can see small black spots, this is due to bleeding point formation; corn is usually round or oval localized keratinous hyperplasia, there is a hard core in the middle. 3. Growth site plantar wart can appear in any part of the sole; corn occurs in parts that are easy to be pressed and rubbed, such as the front of the sole, the outside of the little toe, etc. 4. The number of plantar warts can be single or multiple, easy to spread and increase; corns are generally single or a few. 5. Symptoms When plantar warts are squeezed, there may be pain, and may be accompanied by itching; corns are mainly tender. 6. The development speed of plantar warts is usually relatively fast, and corns develop slowly. 7. Contagious plantar warts are contagious and can be infected by themselves or transmitted to others; corns are not contagious.