Oral thrush is a fungal infection of the mouth. It is not contagious and is usually successfully treated with antifungal medication. It is also called oral candidosis or candiasis because it is caused by a group of yeasts called Candida. Speak to your GP if you develop symptoms of oral thrush. If left untreated, the symptoms will often persist and your mouth will continue to feel uncomfortable. In severe cases that are left untreated, there is also a risk of the infection spreading further into your body, which can be serious.
About oral thrush in adults
Peter G. Pappas, John H. Rex, Jack D. Sobel, Scott G. Filler, William E. Dismukes, Thomas J. Walsh, John E. Candida species are the most common cause of fungal infections. Candida species produce infections that range from non—life-threatening mucocutaneous illnesses to invasive processes that may involve virtually any organ.
Oral thrush happens when a yeast infection develops inside your mouth. Oral thrush most often occurs in infants and toddlers. It causes white or yellowish bumps to form on the inner cheeks and tongue. Those bumps usually go away with treatment. The infection is typically mild and rarely causes serious problems. But in people with weakened immune systems, it can spread to other parts of the body and cause potentially serious complications. In its early stages, oral thrush may not cause any symptoms.
Diagnosis of thrush depends on the location and identifying whether there is an underlying cause. The goal of any oral thrush treatment is to stop the rapid spread of the fungus, but the best approach may depend on your age, your overall health and the cause of the infection. Eliminating underlying causes, when possible, can prevent recurrence. Thrush may return even after it's been treated if the underlying cause, such as poorly disinfected dentures or inhaled steroid use, isn't addressed.