Topical Antifungals
Topical Antifungals
- There are several classes of topical antifungal medications
- Some classes are fungistatic (stop fungi from growing), others are fungicidal (they kill the fungi)
- Not all conditions are treatable with topical antifungals (specifically, hair infections and nail infections do not respond to topical treatment and require systemic treatment)
Examples of Topical Antifungals
- The following are some examples of topical antifungals:
- Imidazoles (fungistatic): Ketoconazole (Rx & OTC), Econazole, Oxiconazole, Sulconazole, Clotrimazole (Rx & OTC), Miconazole (OTC)
- Useful to treat candida and dermatophytes
- Allylamines and benzylamines (fungicidal): Naftifine, Terbinafine (OTC), Butenafine
- Better for dermatophytes, but not candida
- Polyenes (fungistatic in low concentrations): Nystatin
- Better for candida, but not dermatophytes
- Imidazoles (fungistatic): Ketoconazole (Rx & OTC), Econazole, Oxiconazole, Sulconazole, Clotrimazole (Rx & OTC), Miconazole (OTC)
Advantages of Topical Antifungals
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Topical antifungals are preferred for most superficial fungal infections of limited extent.
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Advantages include:
- Relatively low cost
- Acceptable efficacy
- Ease of use
- Low potential for side effects, complications, or drug interactions
Take Home Points
- The efficacy of any topical medication is related to the strength, location, vehicle, and concentration
- Topical medications can be very expensive
- When writing a prescription for a topical medication, include: generic name, vehicle, concentration, directions, amount, # of refills
- Corticosteroids are organized into classes based on their strength (potency)
- Skin atrophy, acne, striae, and telangiectasias are potential local side effects of corticosteroid use