I have a white spot on my tongue. I do not feel any pain. Could it be a cancerous lesion?

White-colored changes on the tongue can have very different backgrounds. Most often we have the opportunity to observe diffuse discolorations covering one third or even a larger part of the tongue closer to its root (at the back). The change is usually associated with other systemic changes in the body (reduced immunity, a cold...). The changes can also remain present for a longer time, even several weeks. Local, sharply demarcated discolorations deserve greater attention. They can have various causes. Most often the cause is thermal or chemical trauma: a burn from hot food, cutlery, a burn from a high concentration of alcohol (propolis), or one caused during a dental procedure by medications. A relatively common cause is also a fungal infection (Candida Albicans). In that case, the white change can be removed with dry gauze. It can likewise be a consequence of systemic changes related to general immunity. In any case, the finding should be shown to a professional because, although unlikely, the change could ultimately also be dangerous. The possibility of a precancerous lesion exists, and its presence can be confirmed only by histological examination.

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