Yes, oral thrush can go away on its own in some cases, especially if the individual has a healthy immune system. Thrush is caused by an overgrowth of the naturally occurring fungus Candida albicans, which is present in the mouth and other parts of the body. When the balance of microorganisms in the body is disrupted, this fungus can overgrow, leading to symptoms such as creamy white patches on the tongue and inner cheeks, pain or difficulty swallowing, and a sore throat.
In mild cases of thrush, the body can naturally restore the balance of bacteria and fungi in the mouth. This can be aided by good oral hygiene, such as brushing your teeth twice a day, flossing daily, and using a tongue scraper. Additionally, increasing your intake of probiotic-rich foods, such as yogurt, sauerkraut, and kimchi, can help restore the balance of healthy bacteria in your mouth.
However, if thrush persists or is severe, it is best to consult a doctor. Antifungal medications are available to help treat thrush, and a doctor can help you choose the best treatment plan for your individual needs.