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Updated: Jun 28, 2026

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis
Published on: July 11, 2013
Antistreptococcal treatment of guttate psoriasis: a controlled study
Bilal Dogan1, Ozlem Karabudak, Yavuz Harmanyeri
1GATA Teaching Hospital, Department of Dermatology, 81327, Istanbul, Turkey. gatadermdogan@yahoo.com
Background:
The role of streptococcal infection in the initiation of guttate psoriasis is well-recognized. But the treatment results with oral erythromycin and phenoxymethylpenicillin are conflicting.
Objective:
Our purpose was to evaluate the effectiveness of these antibiotics in the treatment of streptococcus associated guttate psoriasis comparing with a control group.
Methods:
A total of 43 male patients with serologic evidence of a recent streptococcal infection were studied. Their mean age was 21 years (ranged between 19 and 23 years). These 43 patients were randomly allocated into three groups (no treatment group n = 15, erythromycin group n = 14, phenoxymethylpenicillin group n = 14). Both the treatment groups were treated for 14 d. All the groups were followed up for additional 4 weeks.
Results:
There were no statistically significant improvement in any group and among the groups.
Conclusion:
There was no statistically significant improvement in streptococcus associated guttate psoriasis with or without a course of oral penicillin or erythromycin.
Insights
This study found no significant improvement in guttate psoriasis patients treated with erythromycin or phenoxymethylpenicillin compared to a control group. Antibiotic treatment did not alter the course of streptococcus-associated guttate psoriasis.
Area of Science:
- Dermatology
- Infectious Diseases
- Pharmacology
Background:
- Streptococcal infections are linked to guttate psoriasis onset.
- Previous studies show conflicting results regarding antibiotic efficacy.
Purpose of the Study:
- To evaluate oral erythromycin and phenoxymethylpenicillin effectiveness in treating streptococcus-associated guttate psoriasis.
- Compare antibiotic treatment outcomes against a no-treatment control group.
Main Methods:
- 43 male patients with recent streptococcal infection evidence were enrolled.
- Patients were randomized into three groups: no treatment, erythromycin, or phenoxymethylpenicillin.
- Treatment duration was 14 days, with a 4-week follow-up.
Main Results:
- No statistically significant improvement was observed in any treatment group.
- No significant differences in outcomes were found between the groups.
Conclusions:
- Oral penicillin or erythromycin did not provide statistically significant improvement for streptococcus-associated guttate psoriasis.
- Antibiotic therapy showed no benefit in this patient cohort.
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