Treatments for Candidiasis (Fungal Infection) of the Head and Neck
Candidiasis of the mouth, throat, and voice box is typically treated with topical or oral antifungal medicines, along with attention to the conditions that allow yeast to overgrow.
This page explains how fungal infections caused by Candida yeast in the mouth, throat, and voice box are treated. It focuses on treatment only. Treatment is guided by a healthcare professional, and the medicines described here are general examples, not personal prescriptions.
General principles of treatment
Most Candida infections of the head and neck respond well to antifungal medicines, which fall into two broad types:
Topical antifungals act directly on the surface of the mouth (lozenges, rinses, gels, or dissolving tablets). They keep the medicine mostly in the mouth, which lowers the chance of side effects and drug interactions.
Oral (systemic) antifungals are pills or liquids that are swallowed and work throughout the body. They are used for more extensive or stubborn infections and when the throat or esophagus is involved.
An equally important part of treatment is managing the conditions that allow the yeast to grow. Even the best medicine may fail if these contributing factors are not addressed (see "Treating the underlying contributors" below).
Oral thrush (oropharyngeal candidiasis)
Mild infection is usually treated with topical antifungals for 7 to 14 days. Common options include:
Clotrimazole lozenges (troches) that dissolve slowly in the mouth several times a day.
A miconazole tablet that sticks to the gum and releases medicine once a day.
Nystatin liquid that is swished in the mouth (and swallowed if the throat is involved) several times a day.
Moderate to severe infection is usually treated with an oral antifungal, most often fluconazole taken once daily for 7 to 14 days. Oral fluconazole works at least as well as topical treatment, is convenient, and also treats the throat and esophagus if they are involved.
A few practical considerations: nystatin and clotrimazole products often contain sugar, which is a concern for people with diabetes or a high risk of cavities. People with a very dry mouth may find lozenges hard to dissolve and may do better with a liquid or a pill.
Denture-related sore mouth (denture stomatitis)
Treatment combines antifungal medicine with careful denture care. Cleaning the denture is essential because the yeast lives on the denture surface.
Antifungal medicine: topical antifungals such as nystatin are commonly used and are effective. Systemic antifungals are an option in more severe or persistent cases.
Denture hygiene: dentures are cleaned daily and soaked in a disinfecting solution (such as chlorhexidine or denture-cleansing tablets), which significantly improves the condition. Removing dentures at night gives the tissues a rest.
Denture fit: ill-fitting dentures may need to be repaired or replaced, because ongoing irritation encourages the infection to return.
For dentures that contain no metal, microwave disinfection has been studied and appears about as effective as standard cleaning and antifungal treatment. It is generally done only with the guidance of a dental professional to avoid damaging the denture.
Cracks at the corners of the mouth (angular cheilitis)
The corners of the mouth are often infected with both yeast and bacteria, so treatment usually combines several topical creams. A common approach is an antifungal cream (such as nystatin or clotrimazole) combined with a mild steroid cream to reduce inflammation. Because bacteria are frequently involved, a topical antibiotic cream (such as mupirocin) is often added. Correcting factors that keep the corners moist, such as poorly fitting dentures or a deep skin fold, helps prevent recurrence.
Infection of the voice box and throat (laryngeal and pharyngeal candidiasis)
Infection of the voice box is less common and is usually treated with an oral antifungal, most often fluconazole once daily. Topical antifungals such as nystatin or miconazole may be added or used alone for limited infections. Treatment typically lasts about 2 weeks, followed by a re-check to decide whether more treatment is needed based on how well symptoms have improved. Some cases require up to about a month. Severe infection, or infection that has invaded tissue, may need intravenous (through-the-vein) antifungal treatment in a hospital.
Addressing contributing factors is especially important here. It includes treating acid reflux, practicing good voice care, using inhaled steroid medicines correctly (see below), and stopping smoking.
Esophageal candidiasis (infection of the swallowing tube)
This deeper infection always requires an oral or intravenous antifungal, because topical treatments alone are not enough. Fluconazole taken by mouth (or given through a vein for those who cannot swallow) is the preferred treatment, usually for 14 to 21 days. A liquid form of fluconazole is available for people who have trouble swallowing pills. Symptoms often improve within a few days, but the full course is completed to prevent relapse. If symptoms do not improve within about a week, further evaluation (such as an endoscopy) may be needed to look for other causes or resistant yeast.
Treating the underlying contributors
Lasting success depends on reducing the conditions that let yeast overgrow. Depending on the situation, this may include:
Rinsing the mouth with water after using a steroid inhaler, which removes medicine left in the mouth.
Managing dry mouth by drinking adequate water, using a humidifier, and using saliva substitutes, sugar-free gum, or oral moisturizers.
Good denture care, including nightly removal and regular cleaning.
Controlling diabetes and other medical conditions that weaken the body's defenses.
Treating acid reflux and stopping smoking, especially for throat and voice box infections.
For people with a weakened immune system, treating the underlying condition (for example, effective HIV therapy) greatly reduces how often infections occur.
When infection does not respond or keeps coming back
Refractory infection means the yeast does not clear with standard fluconazole. In this situation a healthcare provider may switch to a different antifungal, such as itraconazole liquid, posaconazole, or voriconazole. Some cases require antifungal medicine given through a vein, such as an echinocandin or amphotericin B, often for a longer course of up to about four weeks.
Recurrent infection most often happens in people whose immune system remains weakened. For selected individuals, a provider may prescribe ongoing low-dose fluconazole (for example, several times per week) to prevent repeated episodes. For most healthy people, however, long-term preventive medicine is not needed, and the focus stays on controlling the contributing factors described above.
Follow-up
Symptoms usually begin to improve within a few days of starting effective treatment. Completing the entire prescribed course, even after the mouth feels better, is emphasized because stopping early makes the infection more likely to return. Follow-up visits are commonly arranged when symptoms do not improve, when they return after treatment, or when there is difficulty or pain with swallowing, so that treatment can be adjusted and other causes can be evaluated.