The main cause for grey tongue discoloration is leukoplakia. According to WebMD, leukoplakia patches may occur at all ages, but are more common in senior adults.
Leukoplakia is a reaction of the mouth to chronic irritation of the mucous membranes. Other causes include irritation from ill-fitting dentures or rough teeth, sun exposure to the lips, chronic smoking, oral cancer and AIDS. If a doctor considers the grey patches suspect, he or she may request a biopsy. Leukoplakia is usually painless, but may be sensitive to spicy foods, heat, touch or other types of irritation. The condition is often harmless and the patches disappear in a couple of weeks.Learn More
Someone with red spots on their tongue may be suffering from geographic tongue, according to Mayo Clinic. Other causes of red spots on the tongue include folic acid and vitamin B-12 deficiencies and scarlet fever, WebMD states.Full Answer >
A discoloration of the tongue, most often called black hairy tongue, is often caused by bacteria or yeast growth. The tongue discoloration may appear in a variety of shades, including black, brown, yellow or green.Full Answer >
According to WebMD, cracks and fissures in the tongue are typically a normal variation, present in 2 to 5 percent of the population. Tongue cracks typically occur in adults and can get deeper with age. They tend to present with no symptoms.Full Answer >
A green tongue indicates that a person is suffering from a condition called black hairy tongue. The condition is commonly characterized by black color, but it may be green in other people, as stated by WebMD. It can also be brown or yellow.Full Answer >