Antifungal ear drops
BMJ Group Medical Reference
Most outer ear infections are caused by bacteria, but 1 in 10 infections may be caused by fungi such as Candida (the yeast that causes thrush). 
If your doctor thinks this is the case, he or she may give you antifungal ear drops such as clotrimazole (brand name Canesten). But we don't know how well these work, because there hasn't been any good-quality research on them.
A fungus is an organism that is sometimes considered to be a type of plant. A fungus lives by feeding on other organisms. The mushrooms we eat in salads are fungi, but so are candida and cryptococcus, which can cause infections in people's bodies.
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