Causes of a white tongue include poor oral hygiene, alcohol use, dehydration and dry mouth, according to Mayo Clinic. Other causes of a white tongue include medication use, oral thrush, oral lichen planus and some cancer... More »

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Stress may result in oral thrush, a fungal infection that presents as white patches on the tongue, according to MedicineNet. Other conditions that cause a coating on the tongue include food debris, bacterial plaque, line... More »

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There are many things that can cause an orange-coated tongue, including vitamin deficiencies, according to WebMD. Scarlet fever can also cause this problem. More »

Dry white tongue causes include dehydration, drug side effects, environmental irritants, poor hygiene, tobacco or alcohol use, yeast infection, inflammation of the tongue, and consumption of spicy foods. People suffering... More »

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Black spots on the tongue can emanate from alcohol ingestion, a soft diet (foods that are soft and easy to chew and swallow), inadequate oral hygiene, fungal infection, dry mouth or excessive use of tobacco, according to... More »

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Some solutions for dry mouth at night or upon awakening include avoiding mouthwash with alcohol, stopping tobacco use and drinking water throughout the day, according to Mayo Clinic. Other things to try include using mou... More »

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Causes of bad breath include consumption of certain foods, poor dental hygiene and use of tobacco products, according to Mayo Clinic. Other causes are dry mouth, mouth infections and certain medications. More »

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