The risk factors include the following:
Habitual smoking, taking snuff and chewing of tobacco,gutka, pan or areca nut
Heavy drinking of alcohol
Human papilloma virus (HPV)
Epstein-Barr virus
Lichen planus that causes white lines and spots in the mouth.
On immuno suppression drugs
Exposure to radiation at a young age
Previous personal history of cancer elsewhere in the body
Family history of cancer
Certain genetic traits and syndromes (such as Fanconi anemia and Dsykeratosis congenita)…