How is a fungal infection of the ear diagnosed?
It you've just come back from SCUBA diving in Hawaii, your doctor may well suspect a fungal cause for your ear infection. Otherwise, because a fungal infection looks just like an infection from germs (bacteria), it's unlikely to be the first thing your doctor thinks of. Most likely, a fungal infection will only be suspected if your infection does not improve with antibiotic drops prescribed for a bacterial infection.
Will I need any tests for a fungal ear infection?
Your doctor will probably treat your ear first and take an ear swab if the condition doesn't get better. Taking an ear swab is a fairly simple procedure and involves the doctor (or nurse) putting a swab that looks very similar to a cotton bud in your ear and swishing it around. This shouldn't be painful unless your ear is very tender and inflamed from the infection. Even then, gentle swabbing should only cause mild discomfort.
When should I see a doctor about a fungal ear infection?
Fungal ear infections usually cause a fair amount of discomfort and discharge so most people want to see a doctor soon after the condition starts. There are some eardrops available from pharmacies, but the best they can do is reduce the inflammation a bit. In fungal infections, they don't usually have much effect.
See a doctor sooner rather than later if:
- You are in a lot of pain.
- Your ear produces a lot of discharge.
- You feel generally unwell or develop unusual symptoms such as dizziness.
- You have a high temperature.
- The outer part of your ear looks very mucky.
- Your hearing becomes muffled.
- You've bought some treatment from the chemist which hasn't worked.
How is a fungal ear infection treated?
If the inside of your ear looks really messy, the doctor may suggest a clean-up. This has the odd name of aural toilet. It can be done by a doctor or more usually a nurse. It involves gently clearing the ear of discharge using swabs, a suction tube or syringe. This may need to be done several times a week in the first instance. Aural toileting eases discomfort and also helps ear drops to get to the right place. However, it may be a bit uncomfortable while you're having it done, and you may need to take some painkillers.
Don't fiddle with your ear, keep it dry and try to resist scratching inside, however itchy it may be, as this will stop the infection from clearing up. It's not usually advisable to put a cotton wool plug in the ear unless you get a lot of discharge and you need to keep it under control for the sake of appearances.
Avoid swimming until the condition clears up.
Your doctor may prescribe 5% aluminium acetate ear drops. This is also known as Burow's solution. It's not an antifungal but is used to calm down inflammation and help remove any muck in your ear.
A similar preparation that helps with inflammation is 2% acetic acid. This is available on prescription or can be bought from the chemist in the form of EarCalm® spray.
There are a number of antifungal ear drops available which may be useful, such as clotrimazole 1% ear drops or an antifungal/steroid combination such as flumetasone pivalate 0.02% plus clioquinol 1% ear drops. There's no real evidence that one is better than another.
If you've tried antifungal drops for a couple of weeks and you're still having problems, stop the treatment and go back and see your doctor. You may need further investigation and/or referral to a specialist. Hospital doctors have special ways of getting the ear clean and dry, such as inserting a pack made from ribbon gauze, a wick made of sponge that hangs out of the ear and drains it or suction using a tiny tube (microsuction).
What is the outlook for a fungal ear infection?
Providing you're otherwise fit and well and your immune system is working properly, the infection should respond fairly quickly to antifungal treatment. However, if you have a long-term condition that makes you prone to getting repeated infections (such as diabetes or AIDS) it may well come back or become persistent. Also if you're exposed to whatever it was that caused the infection in the first place (for example, you go straight back to water sports again), it's likely to return. The problem with fungal infections (and other types of otitis externa) is that once the ear canal is infected the defence system protecting the ear may not return to normal and a vicious cycle is set up. This explains why frequently poking around inside your ear with a cotton bud (some people call it 'cleaning out the ear') prolongs the condition.
Further reading and references
Herasym K, Bonaparte JP, Kilty S; A comparison of Locacorten-Vioform and clotrimazole in otomycosis: A systematic review and one-way meta-analysis. Laryngoscope. 2016 Jun126(6):1411-9. doi: 10.1002/lary.25761. Epub 2015 Nov 24.
Otitis Externa; DermNet NZ
Anwar K, Gohar MS; Otomycosis clinical features, predisposing factors and treatment implications. Pak J Med Sci. 2014 May
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