Malignant Otitis Externa

11 min read

Malignant otitis externa (MOE) is a rare but serious infection of the external ear canal. It is caused by bacteria, usually Pseudomonas aeruginosa, and can spread to the bones of the skull and the brain. It is most common in people with diabetes, but can also occur in people with weakened immune systems. Early diagnosis and treatment are important to prevent serious complications.

Causes

MOE is caused by bacteria, usually Pseudomonas aeruginosa, which is found in water and soil. It can enter the ear canal through a break in the skin, such as a scratch or cut, or through a foreign object, such as a cotton swab. People with diabetes are at higher risk of developing MOE, as their weakened immune systems make them more susceptible to infection.

Diagnosis

MOE is diagnosed through a physical examination of the ear and a culture of the ear discharge. Imaging tests, such as an MRI or CT scan, may also be used to check for bone or brain involvement. Blood tests may be done to check for signs of infection.

Complications

If left untreated, MOE can spread to the bones of the skull and the brain, leading to serious complications, such as meningitis, brain abscess, and facial nerve paralysis. It can also cause hearing loss and balance problems.

Prevention

To reduce the risk of developing MOE, people with diabetes should take steps to control their blood sugar levels and keep their ears clean and dry. People should also avoid inserting foreign objects, such as cotton swabs, into their ears.

Take the Malignant Otitis Externa Assessment

Symptoms

  • Severe ear pain that may be worse at night
  • Itching or drainage from the ear
  • Fever
  • Hearing loss
  • Foul-smelling discharge from the ear
  • Swelling of the ear canal
  • Headache
  • Facial paralysis

If you experience any of these symptoms, it is important to seek medical attention right away. Your doctor will be able to diagnose MOE and provide treatment to help reduce the symptoms and prevent further complications.

Causes

Risk Factors for Malignant Otitis Externa

  • Age: Elderly people are more likely to develop MOE due to weakened immune systems.
  • Diabetes: People with diabetes are more likely to develop MOE due to poor circulation and weakened immune systems.
  • Immune System: People with weakened immune systems are more likely to develop MOE.
  • Ear Trauma: Trauma to the ear canal can increase the risk of developing MOE.
  • Ear Infections: Chronic ear infections can increase the risk of developing MOE.
  • Excessive Moisture: Excessive moisture in the ear canal can increase the risk of developing MOE.
  • Foreign Objects: Objects that are inserted into the ear canal can increase the risk of developing MOE.

It is important to note that these risk factors do not necessarily mean that a person will develop MOE. However, it is important to be aware of these risk factors and to take steps to reduce the risk of developing this condition.

Getting a Diagnosis

Symptoms of Malignant Otitis Externa

The most common symptom of MOE is severe pain in the ear canal. Other symptoms may include:

  • Fever
  • Drainage from the ear
  • Hearing loss
  • Itching or burning sensation in the ear
  • Swollen lymph nodes in the neck

Diagnosis of Malignant Otitis Externa

Your doctor will perform a physical exam of your ear and may order imaging tests such as an MRI or CT scan to look for signs of infection. They may also take a sample of fluid from your ear to test for bacteria or fungi.

Your doctor may also order blood tests to check for signs of infection or to rule out other conditions. They may also refer you to an ear, nose, and throat specialist for further evaluation.

Treatment of Malignant Otitis Externa

Treatment for MOE usually involves a combination of antibiotics and antifungal medications. Surgery may be necessary to remove any damaged tissue or to open up the ear canal. In some cases, a hearing aid may be needed to restore hearing.

It is important to follow your doctor's instructions and take all medications as prescribed. If left untreated, MOE can lead to serious complications such as facial nerve paralysis, meningitis, and hearing loss.

Questions for Your Doctor

Symptoms

Discuss any symptoms you are experiencing, such as pain, itching, drainage, or hearing loss. Your doctor may also ask about any recent changes in your hearing or any other changes in your ear. Be sure to mention any other medical conditions you have, as they may affect your treatment.

Diagnosis

Your doctor may need to perform tests to confirm the diagnosis of malignant otitis externa. These tests may include a physical exam, imaging tests, or a culture of the ear canal. Be sure to ask your doctor about the results of these tests and what they mean for your treatment.

Treatment

Your doctor will likely recommend a combination of antibiotics and other treatments to treat malignant otitis externa. Be sure to ask your doctor about the risks and benefits of each treatment option and any potential side effects. Your doctor may also recommend lifestyle changes, such as avoiding swimming or using ear plugs, to help prevent further infections.

Follow-up Care

Your doctor may recommend follow-up care to monitor your progress and ensure the infection has been completely treated. Be sure to ask your doctor about any follow-up appointments or tests that may be necessary. Your doctor may also recommend lifestyle changes to help prevent future infections.

Treatment

Antibiotics

Antibiotics are the main treatment for MOE. The type of antibiotic used will depend on the type of bacteria causing the infection. Common antibiotics used to treat MOE include ciprofloxacin, levofloxacin, and amikacin. These antibiotics are usually taken orally, but may also be given intravenously in more severe cases.

Surgery

In some cases, surgery may be necessary to remove infected tissue or to open up the ear canal to allow for better drainage. Surgery may also be used to remove any foreign objects that may be causing the infection. Surgery is usually done under general anesthesia and may require a hospital stay.

Corticosteroids

Corticosteroids may be used to reduce inflammation and pain associated with MOE. These medications are usually taken orally or injected directly into the ear canal. Corticosteroids can help reduce swelling and pain, but should not be used for long periods of time as they can cause serious side effects.

Topical Treatments

Topical treatments such as antiseptic solutions, antibiotic ointments, and steroid creams may be used to help reduce inflammation and pain. These treatments are usually applied directly to the affected area several times a day. It is important to follow the instructions on the package carefully to avoid any potential side effects.

Alternative Treatments

Some people may choose to use alternative treatments such as acupuncture, herbal remedies, and homeopathy to treat MOE. While these treatments may provide some relief, it is important to speak to a doctor before trying any alternative treatments as they may not be effective or may even be harmful.

Prevention

The best way to prevent MOE is to practice good ear hygiene. This includes avoiding getting water in the ear, using ear plugs when swimming, and avoiding using cotton swabs or other objects to clean the ear canal. It is also important to seek medical attention if you experience any symptoms of MOE, such as pain, itching, or discharge from the ear.

Drugs & Medications

Treatment of Malignant Otitis Externa

Treatment of MOE typically involves a combination of antibiotics and surgery. Antibiotics are used to kill the bacteria causing the infection. Surgery may be necessary to remove any dead tissue or to open up the ear canal to allow for better drainage.

Drugs Used to Treat Malignant Otitis Externa

The most commonly used antibiotics for MOE are fluoroquinolones, such as ciprofloxacin and levofloxacin. These drugs are usually given intravenously (IV) or orally. Other antibiotics that may be used include aminoglycosides, such as gentamicin, and carbapenems, such as meropenem. In addition to antibiotics, corticosteroids may be used to reduce inflammation and pain. These drugs are usually given orally or as an injection.

Conclusion

Malignant otitis externa is a serious infection of the external ear canal that can spread to the bones of the skull and the brain. Treatment typically involves a combination of antibiotics and surgery. The most commonly used antibiotics for MOE are fluoroquinolones, such as ciprofloxacin and levofloxacin. Corticosteroids may also be used to reduce inflammation and pain.

Diet

Eat a Balanced Diet

Eating a balanced diet that includes plenty of fruits, vegetables, whole grains, and lean proteins can help keep your immune system strong and reduce your risk of infection. It is also important to drink plenty of fluids to stay hydrated and help flush out toxins from your body.

Avoid Sugary Foods and Drinks

Sugary foods and drinks can weaken your immune system and make you more susceptible to infection. Try to limit your intake of sugary snacks and drinks, such as soda, candy, and pastries.

Eat Foods Rich in Vitamin C

Vitamin C is an important nutrient that helps boost your immune system and fight off infection. Foods that are rich in vitamin C include citrus fruits, bell peppers, broccoli, and tomatoes. Eating these foods regularly can help reduce your risk of developing malignant otitis externa.

Avoid Processed Foods

Processed foods are often high in sugar, salt, and unhealthy fats, which can weaken your immune system and make you more susceptible to infection. Try to limit your intake of processed foods and opt for fresh, whole foods instead.

Conclusion

While there is no specific diet that can prevent or treat malignant otitis externa, eating a balanced diet that includes plenty of fruits, vegetables, whole grains, and lean proteins can help reduce your risk of developing the infection. Additionally, avoiding sugary foods and drinks, eating foods rich in vitamin C, and limiting your intake of processed foods can also help keep your immune system strong and reduce your risk of infection.

Lifestyle

Keep the Ear Canal Clean

It is important to keep the ear canal clean to prevent the infection from occurring. Use a cotton swab to gently clean the ear canal, but do not insert it too far. You can also use a warm saltwater solution to flush out the ear canal. Be sure to dry the ear canal thoroughly after cleaning.

Avoid Water in the Ear Canal

Water can increase the risk of infection, so it is important to avoid getting water in the ear canal. Wear ear plugs when showering or swimming, and be sure to dry the ear canal thoroughly after swimming or showering.

Avoid Irritants

Avoid using any products that may irritate the ear canal, such as hair sprays, perfumes, and other products. Also, avoid using cotton swabs or other objects to clean the ear canal.

Manage Stress

Stress can increase the risk of infection, so it is important to manage stress levels. Try to get enough sleep, exercise regularly, and practice relaxation techniques such as yoga or meditation.

See a Doctor

If you experience any symptoms of malignant otitis externa, such as pain, swelling, or discharge from the ear, it is important to see a doctor right away. Your doctor can diagnose the infection and provide treatment to help manage the symptoms.