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.
Little Pimple-Like Bumps on the Inside of the Mouth. Bumps inside your mouth can be canker sores, mucuous cysts, oral lichen planus or inflamed papillae. Small, pimple-like bumps inside your mouth can be caused by multiple conditions, such as canker sores, mucous cysts, oral lichen planus and inflamed papillae. These conditions usually resolve on their own, but certain medications can relieve some of the accompanying pain and discomfort.