- White or red patches in your mouth
- A mouth sore that won't heal
- Bleeding in your mouth
- Loose teeth
- Problems or pain with swallowing
- A lump in your neck
- An earache
- Past or current use of any form of tobacco
- Heavy alcohol use
- A lot of sun exposure
- Fair skin
- Human papillomavirus (HPV) infection
- Lack of fruits and vegetables in your diet
- Chronic mouth irritation, such as from dentures that aren't fitted correctly
- Using betel quid or gutka chewing tobacco products
- Some inherited conditions, such as Fanconi anemia
- Weakened immune system



