eMedicine Specialties > Dermatology > Bacterial Infections
Erythrasma: Treatment & Medication
Updated: Aug 11, 2009
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
- Multimedia
Treatment
Medical Care
Photodynamic therapy using red light (broadband, peak at 635 nm) has been reported to clear erythrasma in 23% of 13 patients and to improve erythrasma in the remaining patients.20
Medication
The goals of pharmacotherapy for erythrasma are to reduce morbidity, eradicate the infection, and prevent complications.
Anti-infectives
Antibacterial and/or antifungal agents are used to eradicate C minutissimum and possible concomitant infection. Erythromycin is the DOC. Infection may be treated with topical and/or oral agents. Therapy must be comprehensive and cover all likely pathogens in the context of this clinical setting. C minutissimum is generally susceptible to penicillins, first-generation cephalosporins, erythromycin, clindamycin, ciprofloxacin, tetracycline, and vancomycin. However, multiresistant strains have been isolated.21,22,23,24
Erythromycin (E.E.S., E-Mycin, Ery-Tab)
DOC that inhibits bacterial growth, possibly by blocking dissociation of peptidyl t-RNA from ribosomes, causing RNA-dependent protein synthesis to arrest.
In children, age, weight, and severity of infection determine proper dosage. When bid dosing is desired, half-total daily dose may be taken q12h. For more severe infections, double the dose.
Adult
250 mg PO qid or 500 mg PO bid for 7-14 d
2-4% solution: Apply to affected area bid for 4-6 wk
Pediatric
30-50 mg/kg/d PO bid for 7-10 d
2-4% solution: Apply to affected area as in adults
Coadministration may increase toxicity of theophylline, digoxin, bromocriptine, alfentanil, cisapride, felodipine, ergotamine, midazolam, triazolam, methylprednisolone, carbamazepine, and cyclosporine; may potentiate anticoagulant effects of warfarin; coadministration with lovastatin and simvastatin increases risk of rhabdomyolysis; cimetidine may increase levels of erythromycin; arrhythmias and increases in QTc intervals occur with disopyramide; no interactions reported with topical dosage form
Documented hypersensitivity; hepatic impairment
Pregnancy
B - Fetal risk not confirmed in studies in humans but has been shown in some studies in animals
Precautions
Caution in liver disease; estolate formulation may cause cholestatic jaundice; GI adverse effects are common (give doses pc); discontinue use if nausea, vomiting, malaise, abdominal colic, or fever occur; 2-4% solution, discontinue if irritation or sensitivity occur
Clarithromycin (Biaxin)
Inhibits bacterial growth, possibly by blocking dissociation of peptidyl t-RNA from ribosomes, causing RNA-dependent protein synthesis to arrest.
Adult
1 g PO once
Pediatric
15 mg/kg PO once
Toxicity increases with coadministration of fluconazole, astemizole, and pimozide; clarithromycin effects decrease and GI adverse effects may increase with coadministration of rifabutin or rifampin; may increase toxicity of anticoagulants, cyclosporine, tacrolimus, digoxin, omeprazole, carbamazepine, ergot alkaloids, triazolam, HMG CoA-reductase inhibitors; cardiac arrhythmias may occur with coadministration of cisapride; plasma levels of certain benzodiazepines may increase, prolonging CNS depression; arrhythmias and increase in QTc intervals occur with disopyramide; coadministration with omeprazole may increase plasma levels of both agents
Documented hypersensitivity; coadministration of pimozide or cisapride
Pregnancy
C - Fetal risk revealed in studies in animals but not established or not studied in humans; may use if benefits outweigh risk to fetus
Precautions
Coadministration with ranitidine or bismuth citrate is not recommended with CrCl <25 mL/min; give half dose or increase dosing interval if CrCl <30 mL/min; diarrhea may be sign of pseudomembranous colitis; superinfections may occur with prolonged or repeated antibiotic therapies
Fusidic acid (Zeta)
Topical antibacterial that inhibits bacterial protein synthesis, causing bacterial death.
Use 2% cream.
Adult
Apply to affected area bid for 2 wk
Pediatric
Apply as in adults
None reported
Documented hypersensitivity
Pregnancy
B - Fetal risk not confirmed in studies in humans but has been shown in some studies in animals
Precautions
Discontinue if irritation or sensitivity occur
Miconazole (Femazole, Lotrimin, Monistat)
Damages fungal cell wall membrane by inhibiting biosynthesis of ergosterol. Membrane permeability is increased, causing nutrients to leak out and resulting in fungal cell death.
Lotion is preferred in intertriginous areas. If cream is used, apply sparingly to avoid maceration effects.
Use 2% cream.
Adult
Apply to affected area bid for 2 wk
Pediatric
Apply as in adults
None reported
Documented hypersensitivity
Pregnancy
C - Fetal risk revealed in studies in animals but not established or not studied in humans; may use if benefits outweigh risk to fetus
Precautions
If sensitivity or chemical irritation occurs, discontinue use; use only externally; avoid contact with eyes
Benzoic acid 6%, salicylic acid 3% (Whitfield's ointment)
Treats infection and inflammation associated with erythrasma.
Adult
Apply to affected area bid for 4 wk
Pediatric
Not established
None reported
Documented hypersensitivity
Pregnancy
C - Fetal risk revealed in studies in animals but not established or not studied in humans; may use if benefits outweigh risk to fetus
Precautions
For external use only
Clindamycin (Cleocin)
Has a bacteriostatic effect; interferes with bacterial protein synthesis similarly to erythromycin and chloramphenicol by binding to 50S subunit of bacterial ribosome.
Adult
Apply 2% aqueous solution tid for 1 wk
Pediatric
Not established
Interacts with opiates and diphenoxylate plus atropine, resulting in slowing of peristalsis; may enhance action of neuromuscular blocking agents; coadministration with erythromycin leads to increased level of clindamycin
Documented hypersensitivity
Pregnancy
B - Fetal risk not confirmed in studies in humans but has been shown in some studies in animals
Precautions
Allergic skin reactions, severe colitis, neutropenia, and polyarthritis
Tetracycline (Achromycin)
Inhibits cell growth by inhibiting mRNA translation. Binds to 16S part of 30S ribosomal subunit and prevents amino-acyl tRNA from binding to A site of ribosome. Binding is reversible in nature.
Adult
250 mg qid for 14 d
Pediatric
Not established
Interferes with bactericidal action of penicillins, renders oral contraceptives less effective, and potentiates effects of warfarin
Documented hypersensitivity
Pregnancy
D - Fetal risk shown in humans; use only if benefits outweigh risk to fetus
Precautions
Esophagitis, allergic reactions, phototoxic reactions, renal toxicity, hemolytic anemia, pseudotumor cerebri, vestibular toxicity, and tooth discoloration
More on Erythrasma |
| Overview: Erythrasma |
| Differential Diagnoses & Workup: Erythrasma |
Treatment & Medication: Erythrasma |
| Follow-up: Erythrasma |
| Multimedia: Erythrasma |
| References |
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References
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Further Reading
Keywords
erythrasma, Corynebacterium minutissimum, C minutissimum, Corynebacterium afermentans, C afermentans
Treatment & Medication: Erythrasma