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Definition

Candidiasis is an infection caused by a yeast (a type of fungus) called Candida. Candida normally lives in the digestive tract and on skin without causing any problems. Sometimes, Candida can multiply and cause an infection if the environment inside the mouth, throat, or esophagus changes in a way that encourages fungal growth.

Candidiasis in the mouth and throat is also called "thrush" or oropharyngeal candidiasis. Candidiasis in the esophagus (the tube that connects the throat to the stomach) is called esophageal candidiasis or Candida esophagitis. Esophageal candidiasis is one of the most common infections in people living with HIV/AIDS.

Symptoms

Candidiasis in the mouth and throat can have many different symptoms, including:

White patches on the inner cheeks, tongue, roof of the mouth, and throat (photo showing candidiasis in the mouth)

Redness or soreness

Cottony feeling in the mouth

Loss of taste

Pain while eating or swallowing

Cracking and redness at the corners of the mouth

Symptoms of candidiasis in the esophagus usually include pain when swallowing and difficulty swallowing. Contact your healthcare provider if you have symptoms that you think are related to candidiasis in the mouth, throat, or esophagus.

Risk & Prevention

Who gets candidiasis in the mouth, throat, or esophagus?

Candidiasis in the mouth, throat, or esophagus is uncommon in healthy adults. People who are at higher risk for getting candidiasis in the mouth and throat include babies, especially those younger than one month old, and people who:

Wear dentures

Have diabetes

Have cancer

Have HIV/AIDS

Take antibiotics or corticosteroids, including inhaled corticosteroids for conditions like asthma

Take medications that cause dry mouth or have medical conditions that cause dry mouth

Smoke

Most people who get candidiasis in the esophagus have weakened immune systems, meaning that their bodies don't fight infections well. This includes people living with HIV/AIDS and people who have blood cancers such as leukemia and lymphoma. People who get candidiasis in the esophagus often also have candidiasis in the mouth and throat.

How can I prevent candidiasis in the mouth, throat, or esophagus?

Ways to help prevent candidiasis in the mouth and throat include:

Maintain good oral health

Rinse your mouth or brush your teeth after using inhaled corticosteroids

Some studies have shown that chlorhexidine mouthwash may help to prevent oral candidiasis in people undergoing cancer treatment

Sources

Candida normally lives in the mouth, throat, and the rest of the digestive tract without causing any problems. Sometimes, Candida can multiply and cause an infection if the environment inside the mouth, throat, or esophagus changes in a way that encourages its growth. This can happen when a person's immune system becomes weakened, if antibiotics affect the natural balance of microbes in the body, or for a variety of other reasons in other groups of people.

Diagnosis & Testing

Healthcare providers can usually diagnose candidiasis in the mouth or throat simply by looking inside. Sometimes a healthcare provider will take a small sample from the mouth or throat. The sample is sent to a laboratory for testing, usually to be examined under a microscope.

Healthcare providers usually diagnose candidiasis in the esophagus by doing an endoscopy. An endoscopy is a procedure to examine the digestive tract using a tube with a light and a camera. A healthcare provider might prescribe antifungal medication without doing an endoscopy to see if the patient's symptoms get better.

Treatment

Candidiasis in the mouth, throat, or esophagus is usually treated with antifungal medicine. The treatment for mild to moderate infections in the mouth or throat is usually an antifungal medicine applied to the inside of the mouth for 7 to 14 days. These medications include clotrimazole, miconazole, or nystatin. For severe infections, the treatment is usually fluconazole or another type of antifungal medicine given by mouth or through a vein for people who don't get better after taking fluconazole. The treatment for candidiasis in the esophagus is usually fluconazole. Other types of prescription antifungal medicines can also be used for people who can't take fluconazole or who don't get better after taking fluconazole.

If you are a healthcare provider, click here to see the Infectious Diseases Society of America's Clinical Practice Guidelines for the Management of Candidiasis.

Statistics

The exact number of cases of candidiasis in the mouth, throat, and esophagus in the United States is difficult to determine because there is no national surveillance for these infections. The risk of these infections varies based on the presence of certain underlying medical conditions. For example, candidiasis in the mouth, throat, or esophagus is uncommon in healthy adults. However, they are some of the most common infections in people living with HIV/AIDS.In one study, approximately one-third of patients with advanced HIV infection had candidiasis in the mouth and throat.

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Candida infections of the mouth, throat, and esophagus

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Candidiasis is an infection caused by a yeast (a type of fungus) called Candida. Candida normally lives in the digestive tract and on skin without causing any problems. Sometimes, Candida can multiply and cause an infection if the environment inside the mouth, throat, or esophagus changes in a way that encourages fungal growth.

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A fungal infection that typically happens on the skin and body.

Candida (a yeast) is the main culprit and can be found in the mouth, throat, gut, and vagina.

It's usually neutral but can be uncontrollable under certain conditions the environment provides.

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Loss of taste

White patches on the inner cheeks, tongue, roof of the mouth, and throat

Redness or Soreness

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"Oral mucosal lesions in a COVID-19 patient: New signs or secondary manifestations?"
Poses a question whether the cause for oral lesions/infections (i.e. candidiasis, herpes simplex, geographic tongue) relate to patient's systemic conditions or COVID-19.

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Candidal infections - causes, symptoms, diagnosis, treatment, pathology

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DIAGNOSIS

- Look inside mouth/throat => take a small sample => sent for lab examination.

- Endoscopy through the esophagus.

TREATMENT
Antifungal medicine:
- If exists to 7-14 days: clotrimazole, miconazole, or nystatin
- If severe, then use fluconazole (If it doesn't work, then a different antifungal medicine should be prescribed).
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PREVENTION:
* Take care of teeth by brushing very well (especially the spaces).
* Mouthwash
* Drink enough fluids regularly like water.
TREATMENT
* Taking probiotics like antimycotic drugs (i.e. nystatin, miconazole, clotrimazole and fluconazole).
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Juliana Amorim dos Santos
University of Brasília
[Actual source of photo]

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Candida albicans
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