A lady presented with creamy white vaginal discharge with fishy odor, drug of choice is:
**Core Concept**
The underlying condition being described is likely **bacterial vaginosis**, characterized by an imbalance in the normal vaginal flora. This imbalance leads to an overgrowth of anaerobic bacteria, resulting in symptoms such as a creamy white vaginal discharge with a fishy odor. The diagnosis and treatment of bacterial vaginosis involve understanding the role of **lactobacilli** in maintaining vaginal health.
**Why the Correct Answer is Right**
The drug of choice for treating bacterial vaginosis is **metronidazole**, which is effective against anaerobic bacteria. Metronidazole works by entering the cells of the microorganisms and damaging their DNA, ultimately leading to the death of the bacteria. This mechanism of action makes metronidazole highly effective in treating bacterial vaginosis by reducing the anaerobic bacterial load and restoring the balance of the vaginal flora.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not specified, but typically, the first line of treatment for bacterial vaginosis is not an antibiotic like those used for other types of infections.
**Option B:** Incorrect as it is also not specified, but usually, the treatment does not involve drugs that are not effective against anaerobes.
**Option C:** Incorrect because, although not specified, drugs like clindamycin can be used as an alternative but are not typically the first choice due to potential side effects and resistance issues.
**Option D:** Incorrect as it is not the preferred initial treatment for bacterial vaginosis.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **metronidazole** is the preferred treatment for bacterial vaginosis due to its efficacy against anaerobic bacteria. It's also important to note that treatment of sexual partners is not typically recommended, as the condition is not considered a sexually transmitted infection in the traditional sense.
**Correct Answer:** D. Metronidazole.