Disclaimer: This is general health information only and is not a substitute for advice from your GP or healthcare professional.
1. What is ketoconazole shampoo?
Ketoconazole shampoo is a medicated antifungal shampoo used to treat scalp conditions caused by yeast and fungal overgrowth. It is commonly available in 1% over-the-counter formulations and 2% prescription-strength versions.
2. What conditions does ketoconazole shampoo treat?
It is primarily used to treat dandruff and seborrhoeic dermatitis of the scalp. It is also effective for tinea versicolor, a superficial fungal infection that can affect the chest, back, and other areas of the body.
3. How does ketoconazole shampoo work?
Ketoconazole works by inhibiting the growth of Malassezia yeast and other fungi on the skin. It disrupts the fungal cell membrane, reducing inflammation, scaling, itching, and flaking.
4. How should ketoconazole shampoo be used?
The shampoo should be applied to wet hair or affected skin, massaged into a lather, and left on the scalp for three to five minutes before rinsing thoroughly. It is usually used two to three times per week for several weeks, depending on the condition being treated.
5. How long does it take to see improvement?
Most people notice reduced itching and flaking within two to four weeks. Continued use as directed helps maintain control and prevent recurrence. Skin colour changes from tinea versicolor may take longer to return to normal even after the infection clears.
6. Can ketoconazole shampoo be used on the face or body?
Yes, it may be used on affected areas of the face or body for fungal conditions such as seborrhoeic dermatitis or tinea versicolor. It should be applied carefully and kept away from the eyes.
7. Are there any side effects?
Ketoconazole shampoo is generally well tolerated. Mild side effects may include scalp irritation, dryness, burning sensation, or changes in hair texture. Allergic reactions are uncommon but possible.
8. Is ketoconazole shampoo safe for long-term use?
Intermittent long-term use for maintenance is generally considered safe when used as directed. Many people use it once weekly or less frequently to prevent recurrence of dandruff or seborrhoeic dermatitis.
9. Who should avoid using ketoconazole shampoo?
Individuals with known allergy to ketoconazole or any ingredient in the product should avoid it. If significant irritation develops, use should be stopped and medical advice sought.
10. When should I see a doctor?
Medical advice should be sought if symptoms do not improve after several weeks of use, worsen, spread beyond the scalp, or if there are signs of secondary infection such as severe redness, swelling, or pain.