Look at the surface of the leaves. If your plant is indeed infested with spider mites, the leaves may have yellow blotches on them. When light falls on the leaves, you may see a silvered look or even streaks of bronze or silver.
Healthgrades Editorial Staff. White patches in the mouth are a common symptom of infection, inflammation, trauma, malignancy, and other underlying conditions and diseases. Mouth white patches result from pathogens, such as bacteria, viruses and fungi, which inflame the lining of the mouth causing swelling, redness, and ulcer formation.
Thrush or yeast infection. This yeast infection can cause a bright red thick rash on an infantâs bottom or white bumps in the mouth. Mouth yeast infections are called thrush. Yeast infections are common following antibiotic treatment and thrive in warm moist environments.