Peripheral neuropathy can be as a side effect of all of the following anti-retroviral drugs, EXCEPT:
**Core Concept**
Peripheral neuropathy is a condition characterized by damage to the peripheral nerves, which can cause pain, numbness, and weakness in the affected areas. Anti-retroviral drugs, used to treat HIV/AIDS, can cause peripheral neuropathy as a side effect.
**Why the Correct Answer is Right**
Peripheral neuropathy is often associated with anti-retroviral drugs that affect mitochondrial function or have a high lipid solubility. These drugs can cause mitochondrial dysfunction, leading to axonal degeneration and nerve damage. For example, didanosine (ddI) and stavudine (d4T) are known to cause peripheral neuropathy due to their mitochondrial toxicity.
**Why Each Wrong Option is Incorrect**
**Option A:** Didanosine (ddI) - This is a correct association, as ddI is known to cause peripheral neuropathy due to its mitochondrial toxicity.
**Option B:** Stavudine (d4T) - Similar to ddI, d4T is also associated with peripheral neuropathy due to its mitochondrial toxicity.
**Option C:** Zidovudine (AZT) - AZT is actually less likely to cause peripheral neuropathy compared to ddI and d4T, making it the correct answer.
**Clinical Pearl / High-Yield Fact**
When prescribing anti-retroviral therapy, it's essential to monitor patients for signs of peripheral neuropathy, especially those taking ddI and d4T. Early detection and dose adjustment can help prevent or mitigate this side effect.
**Correct Answer: C. Zidovudine (AZT)**