Ketoconazole cream is an antifungal medication. It's used to treat different types of fungal skin infections, including ringworm and yeast skin infections. Ketoconazole cream is approved for adults only. It's typically applied onto the skin once or twice a day. Most people have very few side effects, like itching and stinging where the cream is applied.
Tinea versicolor (a fungal infection that causes discolored patches on the skin)
Yeast infection on the skin (caused by Candida)
Ketoconazole cream is a type of antifungal medication. It kills the fungus by damaging its protective outer layer. This helps stop the fungal skin infection from spreading and getting worse.
Source: DailyMed
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Less common—For cream, shampoo, foam, or gel
Itching, stinging, burning, or irritation not present before use of this medicine
Rare—For cream, foam, or gel
bleeding from sore in the mouth
blistering, crusting, irritation, itching, or reddening of the skin
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
cracked, dry, or scaly skin
discoloration of the fingernails or toenails
dizziness
eye dryness, irritation, or swelling
red rash with watery, yellow-colored, or pus filled blisters with or without thick yellow to honey-colored crusts
skin dryness, pain, rash, redness, or swelling
sore in the mouth or on the gums
swelling of the face
Rare—For shampoo
Hair loss and irritation
Incidence not known—For gel
Incidence not known—For shampoo
Blistering, burning, crusting, dryness, or flaking of the skin
burning sensation of the skin
burning, itching, redness, skin rash, swelling, or soreness at the application site
discoloration of the hair
fast heartbeat
hoarseness
irritation
itching, scaling, severe redness, or soreness of the skin
joint pain, stiffness, or swelling
rash
shortness of breath
swelling of the eyelids, face, lips, hands, or feet
thinning of the hair
tightness in the chest
troubled breathing or swallowing
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common—For shampoo or gel
Dryness or oiliness of the hair and scalp
headache
Rare—For shampoo
Abnormal hair texture
mild dryness of the skin
scalp pustules
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Can treat many different kinds of fungal skin infections
Skin usually starts improving shortly after you start using the cream
Applied directly to the affected area(s)
Has few side effects
Must use for at least 2 weeks (depends on the type of infection)
Not available over the counter
Some creams have sulfites, which can cause allergic reactions in certain people
Not known if safe for people who are pregnant or breastfeeding
Use the ketoconazole cream only on the skin. Don't put it in your eyes, nose, mouth, or anywhere else in your body. If you do, it can cause irritation.
Wash and dry the affected area(s) of your skin well before applying the ketoconazole cream.
Wash your hands well after you use the ketoconazole cream, unless you need to use it on your hands. This prevents the medication from getting in your eyes or other places on your body where you don't need it.
You might feel some stinging or itching after you apply the ketoconazole cream. But if you notice a serious rash appear, call your care team.
Most people will see their fungal skin infection start to get better within a few days after starting the ketoconazole cream.
If you have tinea versicolor, use the ketoconazole cream for 2 weeks. But be patient for your skin color to go back to normal. It could take weeks or months after you finish using the cream to see improvement in color. This doesn't mean that the ketoconazole cream didn't work. Ask your dermatologist if you're worried about your skin color after treatment.
Make sure to keep using the ketoconazole cream the entire time your prescriber tells you to. Stopping too early can cause your infection to come back or become worse.
If your skin infection doesn't get better or gets worse after you finish using the ketoconazole cream, talk to your prescriber. You might need a different medication to treat your infection.
Ketoconazole cream can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Risk factors: Asthma | Allergy to sulfites
Even though it's rare, some people could have a serious allergic reaction to the ketoconazole cream. If you get hives, your face or tongue swells up, or you have trouble breathing, get medical help right away.
Some ketoconazole creams also have sulfites in them. If you're allergic to sulfites or have asthma, your chance of an allergic reaction could be higher. It's important to know that sulfite and sulfa are not the same thing. So, many people with a sulfa allergy can still use this cream. If you know you have a sulfite allergy, talk to your prescriber to make sure the ketoconazole cream is safe for you.
Ringworm, jock itch, tinea versicolor, or yeast skin infection: Apply the cream to the affected area(s) and the areas surrounding the infection. Apply once a day for 2 weeks.
Athlete's foot: Apply the cream to the affected area(s) and the areas surrounding the infection. Apply once a day for 6 weeks.
Seborrheic dermatitis: Apply the cream to the affected area(s) twice a day for 4 weeks, or until the skin clears.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
Tinea versicolor (a fungal infection that causes discolored patches on the skin)
Yeast infection on the skin (caused by Candida)
Jock itch
Athlete's foot
Ringworm
Tinea versicolor (fungal infection that causes discolored spots on the skin)
Yeast infections of the skin
Seborrheic dermatitis of the scalp - shampoo and gel only
Fungal nail infection - nail lacquer only
Jock itch
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American Academy of Allergy, Asthma & Immunology. (2024). Sulfite and sulfa drugs.
Choi, F. D, et al. (2019). Topical ketoconazole: A systematic review of current dermatological applications and future developments. Journal of Dermatological Treatment.
Encube Ethicals Private Limited. (2024). Ketoconazole- ketoconazole cream, 2% cream [package insert]. DailyMed.
MedlinePlus. (2024). Candida infection of the skin.
National Eczema Society. (n.d.). Seborrhoeic dermatitis in adults.
National Eczema Society. (n.d.). Skin infections and eczema.
Sun Pharmaceutical Industries, Inc. (2025). Ketoconazole cream [package insert]. DailyMed.
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