What is an abnormal white lesion on tongue?

An abnormal white lesion on the tongue can be indicative of several conditions, including oral leukoplakia, which may result from irritation or tobacco use, or oral thrush, a fungal infection caused by Candida. Other possibilities include lichen planus or oral cancer, particularly if the lesion is persistent and not painful. It's important to consult a healthcare professional for an accurate diagnosis and appropriate management if such a lesion is observed. Regular oral examinations can help identify any concerning changes early.