White spots on the lips may be caused by abnormal sebum production, and these white spots are often painless white spots. Other causes of white spots on lips may also be caused by some viral and fungal infections, and a few are also signs of mouth and lip cancer. White spots on the lips may be harmless tiny white spots that tend to get larger with age, and more than 100 bumps may exist on the inside of a person’s lips. White spots caused by disease may be caused by herpes simplex, oral cancer or oral thrush. Herpes simplex causes white bumps or ulcers on the lips, which initially appear as small sores and eventually turn into blisters that fill with fluid as the disease progresses. Oral thrush is a fungal infection that causes white lesions on the lips, mouth, etc. The most common is some fungal infections and the symptom is the appearance of white spots. Oral thrush, which will appear as a white bump that is initially swollen and painless, but will eventually bleed or ulcerate, generally occurs mostly in the smoking population. There are many reasons for the occurrence of white dots, and if you find white dots on your lips in your daily life, you must seek treatment in time to avoid neglecting some diseases and missing the best time for treatment.