What might a red smooth tongue indicate in an elderly patient?

• A. Dehydration
• B. Cushing's syndrome
• C. Vitamin deficiency
• D. Hypertension

Answer: (C)

A red, smooth tongue in an elderly patient is often indicative of a vitamin deficiency, particularly a deficiency in vitamin B12, folate, or iron. These deficiencies can lead to changes in the tongue's appearance, including glossitis, which is characterized by inflammation and a smooth, shiny surface. In the context of vitamin deficiencies, the red coloration results from the loss of papillae, which may also contribute to the smooth appearance.

The condition can have systemic effects and may be associated with additional symptoms such as fatigue, weakness, or neurological issues, depending on the specific vitamin deficiency. Identifying a red, smooth tongue can therefore prompt further investigation into the patient’s nutritional status and the potential for deficiencies that could require dietary modification or supplementation.

While dehydration may also cause some changes in oral mucosa, it typically does not produce a red and smooth appearance specifically on the tongue. Cushing's syndrome and hypertension do not directly correlate with the symptoms exhibited and would present with different clinical features.