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.
1 Mouth fungus is an infection of the mouth caused by the candida fungus, also known as yeast. 2  Candida infection is not limited to the mouth; it can occur in other parts of the body as well, causing diaper rash in infants or vaginal yeast infections in women. A common sign of mouth fungus is the presence of creamy white, slightly raised lesions in the mouthâusually on your tongue or inner cheeksâbut also sometimes on the roof of the mouth, gums, tonsils, or back of the throat.