About Oral Thrush (Mouth Thrush)
Oral thrush, also known as oral candidiasis, is a fungal infection that occurs in the mouth. It is caused by an overgrowth of yeast called Candida, specifically Candida albicans. This infection leads to the development of white or yellow bumps or patches on the inside of the cheeks, tongue, lips, tonsils, or roof of the mouth.
Oral thrush can cause symptoms such as a sore throat, difficulty swallowing, a burning sensation, loss of taste, and dry mouth. While thrush is generally mild and can resolve quickly, individuals with weakened immune systems are more susceptible to complications. This includes people living with HIV, those undergoing radiation or chemotherapy treatments, infants, and older adults. Chronic use of steroids or antibiotics may also increase the risk of developing oral thrush. Treatment typically involves antifungal medication prescribed by a doctor.
The root causes of oral thrush are an overgrowth of the yeast Candida albicans, which naturally exists in the microbiomes of 50% of the population. Normally, beneficial bacteria in your body help keep Candida albicans under control. However, if your immune system is compromised or the balance of microorganisms in your body is disrupted, the fungus can grow out of control, leading to oral thrush.
Non-modifiable risk factors for oral thrush cannot be controlled or changed. They include:
- Infants and older adults are more at risk
- Having conditions that weaken the immune system, such as HIV or uncontrolled diabetes
Modifiable risk factors for oral thrush can be influenced by individual habits and lifestyle. They include:
- Taking medications that weaken the immune system, such as corticosteroids or immunosuppressants
- Smoking
- Wearing dentures
- Taking antibiotics
- Using steroid inhalers
- Prolonged hospital stays
- Undergoing cancer treatments like chemotherapy and radiation therapy
It is important to note that these risk factors can be modified or managed with appropriate medical guidance.
The most common early symptoms of oral thrush include:
- White patches on the tongue, roof of the mouth, inner cheeks, gums, tonsils, and back of the throat. These patches may resemble cottage cheese and can be easily scraped off
- Pain or discomfort in the mouth, especially while eating, drinking, or swallowing
- Burning sensation in the mouth
- Redness and inflammation in the affected areas
- Changes in taste or temporary loss of taste
- Cracking and painful corners of the mouth
As oral thrush progresses or becomes more severe, other common symptoms may occur:
- Soreness and increased pain while eating or drinking
- Cotton-like feeling in the mouth
- Dry, cracked skin at the corners of the mouth
- Difficulty swallowing
- Bad taste in the mouth
- Redness, irritation, and pain under dentures (denture stomatitis)
It is important to note that oral thrush can also affect the esophagus in some cases. If you experience any of these symptoms, it is recommended that you consult with your healthcare professional for an accurate diagnosis and appropriate treatment.
To diagnose Oral Thrush, doctors commonly perform the following examinations, tests, and procedures:
- Physical Examination: A doctor will examine the mouth for characteristic lesions and plaques associated with Oral Thrush.
- Culture Test: Using a cotton swab, a small sample is collected from the patches in the mouth. This sample is sent to a laboratory for analysis to confirm the presence of Candida species, which causes Oral Thrush.
- Blood Test: A blood test may be requested to rule out any underlying conditions that may contribute to Oral Thrush, such as HIV, malnutrition, or diabetes.
Additional examinations, tests, and procedures to determine the stage or severity of oral thrush may include:
- Biopsy: A biopsy of the affected area may be done to confirm the diagnosis and assess the extent of tissue involvement.
- Throat Swab Culture or Endoscopy: These procedures may be performed to check for a fungal infection in the throat or esophagus, especially if symptoms persist or if there are concerns about deeper tissue involvement.
It is important to consult with a healthcare professional for an accurate diagnosis and appropriate management plan. They can provide personalized guidance based on your individual situation.
The goals of treatment for Oral Thrush are to eliminate the Candida fungus responsible for the infection, relieve symptoms, and prevent recurrence. Here are the different treatment options and how they work:
Medication Types:
- Antifungal medications: These medications, such as fluconazole, clotrimazole, miconazole, and nystatin, directly target and kill the Candida fungus. They can be prescribed as tablets, lozenges, oral suspensions, or topical applications.
Therapies:
- Antiretroviral therapy (ART): For individuals with HIV-related oral thrush, ART is used to suppress the virus and strengthen the immune system. This helps prevent the progression of HIV and reduces the risk of recurring Oral Thrush.
Therapeutic Procedures:
- Mouth rinsing with saltwater: Rinsing the mouth with saltwater can help reduce inflammation and promote healing of Oral Thrush lesions.
- Using a soft toothbrush: Using a soft toothbrush helps avoid scraping the lesions and causing further irritation.
Health Behavior Changes:
- Avoiding mouthwashes or sprays: Some mouthwashes or sprays can disrupt the balance of bacteria in the mouth, making it easier for Candida to overgrow. Avoiding them can help prevent worsening of Oral Thrush.
- Eating unsweetened yogurt: Consuming unsweetened yogurt can help restore healthy bacteria levels in the mouth and reduce the risk of thrush.
Home Remedies:
- Probiotics: Probiotics, either in food form (like yogurt) or as supplements, may help restore the balance of beneficial bacteria in the mouth. However, it is best to consult a healthcare professional before starting any new supplements.
Remember to consult with a healthcare professional before starting any treatment. Medication dosing may be affected by many factors. Check with your healthcare professional about dosing for your individual situation. Other side effects can occur. Check with your healthcare professional or read the information provided with your medication for additional side effect information.