A vaginal yeast infection is a common condition caused by an overgrowth of the fungus Candida. This fungus is normally present in small amounts in the body, but certain factors like antibiotics, hormonal changes, or a weakened immune system can lead to an imbalance, resulting in an infection. Symptoms often include itching, burning, and unusual discharge. Treatment for a vaginal yeast infection typically involves antifungal medications, which can be found over-the-counter or prescribed by a doctor. It's important to consult a healthcare professional if symptoms persist, as they can help determine the best course of action and rule out other conditions.