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LETTER TO THE EDITOR
Year : 2015  |  Volume : 81  |  Issue : 1  |  Page : 56

The efficacy of macrolides and acyclovir in pityriasis rosea


IRCCS A.O.U. San Martino IST DISSAL, Department of Dermatology, Largo Rosanna Benzi 10, Genoa, 16132, Italy

Date of Web Publication6-Jan-2015

Correspondence Address:
Dr. Giulia Ciccarese
IRCCS A.O.U. San Martino IST. DISSAL, Department of Dermatology, Largo Rosanna Benzi 10, Genoa, 16132 Italy
Italy
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0378-6323.148572

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How to cite this article:
Drago F, Ciccarese G, Rebora A, Parodi A. The efficacy of macrolides and acyclovir in pityriasis rosea. Indian J Dermatol Venereol Leprol 2015;81:56

How to cite this URL:
Drago F, Ciccarese G, Rebora A, Parodi A. The efficacy of macrolides and acyclovir in pityriasis rosea. Indian J Dermatol Venereol Leprol [serial online] 2015 [cited 2020 Aug 6];81:56. Available from: http://www.ijdvl.com/text.asp?2015/81/1/56/148572


Sir,

We read with interest the article by Pandhi et al., [1] who evaluated the efficacy of azithromycin in pityriasis rosea (PR) and we are not entirely surprised by its failure. In fact, an increasing number of studies using valid methodology have focused on the role of systemic infection with human herpes virus (HHV) 6 and/or 7 as the cause of pityriasis rosea. [2] Hence, azithromycin had only a slight chance to show any efficacy, unless it was due to its modest anti-inflammatory and immunomodulatory properties. As a viral disease, instead, pityriasis rosea could be responsive to antiviral drugs and, in fact, we obtained a fast response in 87 consecutive patients treated with high-dose oral acyclovir, 800 mg given 5 times daily for 7 days. [3] Thirty percent of patients had complete regression of lesions and over 60% had partial regression within one week. In addition, in the treated patients, significantly fewer new lesions appeared than in the placebo group and the systemic symptoms were alleviated as well. The response was surprising since it was obtained after only 1 week, considering that, in most studies on the systemic treatment for pityriasis rosea, the effect was evaluated after 2 weeks, a time at which the disease is already undergoing spontaneous remission in a number of patients.

Furthermore, the authors cited neither the paper by Ehsani et al. [4] who compared erythromycin (400 mg 4 times a day for 10 days) with acyclovir (4 g daily for 10 days) and confirmed that the latter is more effective, nor the recent paper by Amatya et al. [5] who repeated the study and drew the same conclusions.

At the moment, no treatment can be recommended on the basis of evidence-based medicine and pityriasis rosea remains a self-limiting exanthematous disease that probably needs just reassurance and a little rest. However, it should not be forgotten that a safe treatment for pityriasis rosea in pregnancy is yet to be found., [2] In fact, when occurring in pregnant women, pityriasis rosea may herald a possible HHV-6 and/or HHV-7 intrauterine fetal infection with premature delivery and even fetal death. [2] This is especially true when pityriasis rosea develops during the first weeks of gestation, the lesions have an unusual extension and long duration, and constitutional symptoms are present. In such cases of pityriasis rosea, which might affect the outcome of pregnancy, appropriate antiviral therapy may be considered.

 
  References Top

1.
Pandhi D, Singal A, Verma P, Sharma R. The efficacy of azithromycin in pityriasis rosea: A randomized, double-blind, placebo-controlled trial. Indian J Dermatol Venereol Leprol 2014;80:36-40.  Back to cited text no. 1
[PUBMED]  Medknow Journal  
2.
Drago F, Broccolo F, Rebora A. Pityriasis rosea: An update with a critical appraisal of its possibile herpesviral etiology. J Am Acad Dermatol 2009;61:303-18.  Back to cited text no. 2
    
3.
Drago F, Vecchio F, Rebora A. Use of high-dose acyclovir in pityriasis rosea. J Am Acad Dermatol 2006;54:82-5.  Back to cited text no. 3
    
4.
Ehsani A, Esmaily N, Noormohammadpour P, Toosi S, Hosseinpour A, Hosseini M, et al. The comparison between the efficacy of high dose acyclovir and erythromycin on the period and signs of pityriasis rosea. Indian J Dermatol 2010;55:246-8.  Back to cited text no. 4
[PUBMED]  Medknow Journal  
5.
Amatya A, Rajouria R, Karn DK. Comparative study of effectiveness of oral acyclovir with oral erythromycin in the treatment of pityriasis rosea. Kathmandu Univ Med J 2012;10:57-61.  Back to cited text no. 5
    




 

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