Although delusions might be a symptom of more common disorders, such as schizophrenia, delusional disorder itself is rather rare. Delusional disorder most often occurs in middle to late life and is slightly more common in women than in men.
Canker Sores. Canker sores are ulcers that usually appear on the base of your gums, tongue, the roof of your mouth and the inner surface of your lips and cheeks. Canker sores start as painful, red bumps, then develop into open ulcers with a yellow or white middle. The areas around canker sores are bright red.
Creamy white lesions on the tongue are one sign of thrush; other symptoms include: White patches in other areas of the mouth. Lesions that look like cottage cheese. Red, cracked corners of the mouth and lips. Loss of taste. Cotton mouth or dry mouth. Scraping oral thrush spots usually removes the white coating, but this can also cause slight bleeding. Canker Sores. A white spot on the tongue surrounded by a red, inflamed halo is probably a canker sore. These common and recurring lesions can be small or large and appear on its own or in groups.