A 65-year-old man visits his primary physician because of tingling in his hands and feet, and a sense that he is forgetting things more than usual. A CBC indicates a mild anemia. The patient states that his diet has not changed, other than eating more red meat than before. This patient can be best treated by which one of the following?
A 65-year-old man visits his primary physician because of tingling in his hands and feet, and a sense that he is forgetting things more than usual. A CBC indicates a mild anemia. The patient states that his diet has not changed, other than eating more red meat than before. This patient can be best treated by which one of the following?
💡 Explanation
## **Core Concept**
The patient's symptoms of tingling in hands and feet, mild anemia, and cognitive issues suggest a deficiency in a crucial vitamin. The increased consumption of red meat could be related to the deficiency if the vitamin is primarily found in non-meat sources or if the meat consumption is displacing other essential food groups.
## **Why the Correct Answer is Right**
The symptoms described are classic for a deficiency in **Vitamin B12**. Vitamin B12 is crucial for the synthesis of DNA, fatty acids, and myelin, the fatty substance that surrounds and protects nerve fibers. A deficiency can lead to neurological symptoms such as tingling and neuropathy, as well as hematological manifestations like mild anemia. Vitamin B12 is primarily found in animal products, but the body's stores can last for several years. However, strict vegetarians and vegans are at risk, and individuals with certain gastrointestinal conditions or those taking specific medications may also become deficient. The patient's increased consumption of red meat might not necessarily contribute to a B12 deficiency, as red meat is a source of B12; however, the question hints at a possible dietary imbalance or issue with absorption. Treatment involves supplementation with **Vitamin B12**, which can be administered orally in high doses or via injection.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not provided, but typically, incorrect options might include treatments for different types of anemia or neurological conditions not directly related to Vitamin B12 deficiency.
- **Option B:** Similarly, without specifics, one might guess this could involve a treatment for a different vitamin deficiency or a condition not directly related to the symptoms described.
- **Option C:** This could potentially involve another form of nutritional supplementation or treatment not directly targeted at Vitamin B12 deficiency.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **Vitamin B12 deficiency** can present with neurological symptoms before hematological ones. Early diagnosis and treatment are crucial to prevent irreversible neurological damage. A classic exam question might involve distinguishing between Vitamin B12 and folate deficiency, with the former causing neurological symptoms and the latter not.