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lnrern;iri(Mial lournal of Dcriiiarology, Vol. ^5. No. I I, November 1 996 REVIEW ERYSIPELAS: AN UPDATE CHRISTIAN CHARTIER, M.D., AND E D O U A R D G R O S S H A N S , M.D. Erysipelas consists of a superficial skin infection with lymphatic involvement. In general review articles of streptococcal infections published in the early 1970s, erysipelas is either barely mentioned or alluded to as an infection on tbe way to extinction; however, in some countries, a dramatic increase in tbe incidence of tbis infection bas been observed and, above all, it is the site of erysipelas tbat bas cbanged. Facial sites bave be- come rare and now erysipelas of tbe legs is commonly observed witb a bigb rate of atypical and recurrent forms.' Recent papers bave added new clinical, diag- nostic, microbiologic, and tberapeutic information. EPIDEMIOLOGY From 1940 to 1970, tbe decline in streptococcal infec- tions bas been related to antimicrobial therapy, improved living conditions, and decreased virulence of the infecting organisms. In the past few years, tbe incidence of erysipelas bas been increasing. In our clinic, tbis increas- ing incidence became striking from 1973 on. (Fig. l).'--^ Tbe upsurge in erysipelas is confirmed by most au- tbors in industrialized countries.'"' At particular risk for infection are the young, tbe elderly, and immunocompro- mised patients.* But there are no satisfying explanations for tbe comeback of tbis disease. Epidemic forms and nosocomial infections are rare; erysipelas affects only iso- lated individuals. Streptococcal resistance to antimicro- bials and subsequent failure of tberapy cannot be consid- ered as a possible explanation. Tbere is, perhaps, a bacteriologic explanation with tbe increase of some M- serotypes. A potential explanation may be tbe loss of col- lective immunity against virulent streptococcal strains.'' BACTERIOLOGIC FEATURES Streptococci were determined to be the causative agent in 79% of tbe cases of erysipelas in the retrospective analysis of Bernard et al."* In this report, group A strep- From the Dermatology Clinic, Faculty of Medicine, Louis Pasteur University, Strasbourg, France. Address for correspondence: F-douard Grosshans, M.D., Dermatology Clinic, Faculty of Medicine, 1 Place de l'Hopital, F-67091 Strasbourg, France. tococci predominated in 67% of tbe cases (group G: 23%; group C: 7%, and group B: 3%). Norby et al.« sbowed a dominance of serotype Tl M1, but serotyp- ing data of streptococci isolated from erysipelas are seldom available in tbe otbers reports. One sbould be aware of tbe possibility of otber causative agents, given tbe particular tberapeutic con- siderations: Staphylococcus aureus, Piieumococcus, Klebsiclla pneumoniae, Yersinia enterocolitica and Haemophilus influenzae. Cox et al.' described a patient witb an acute ulcerated preseptal erysipelas with subse- quent spread across tbe face, in wbom conjunctival swabs demonstrated tbe presence of Moraxella species. CLINICAL DATA Erysipelas classically involves the face, but currently tbe predominant location is tbe lower extremities tbat are favored by local trophic disorders.'-'" In the series reported by Mainetti et al.," six of 583 cases of ery- sipelas seen between 1981 and 1991 were localized to the buttock and bip. Five patients had had a dynamic hip screw implanted for coxartbritis on tbe side, wbere tbe skin infection developed. Tbe possible surgical compromise of the venous-lymphatic circulation of tbe buttocks appears to be tbe causative factor rather than superinfection of the surgical wound. Clinically atypi- cal forms are frequent and some clinical features, such as bullae and purpura, are not rare. DIAGNOSIS—BACTERIOLOGIC TESTS A positive diagnosis of erysipelas is, above all, based on tbe clinical findings. Bacteriologic tests are useful. Blood cultures are not always positive even if tbey are performed in tbe early septic pbase, wben tbe patient bas a bigb fever. Tbese cultures are positive in 5% of tbe cases. Swabs can easily be obtained from tbe local portal of entry or from the fluid of intact pustules or bullae developing on tbe surface of tbe inflammatory plaque. The injection-reaspiration metbod, altbougb easy to perform, is also disappointing. In the report of Bernard et a I.,** detection of streptococci in skin speci- mens was better witb direct immunofluorescence (64%), tban with latex agglutination (47%) or classic culture tecbniques (28%). 779 International Journal of Dermatology Vol. 35, No. t 1, November 1996 Figure 1. A frequency curve of erysipelas in the Dermatol- ogy Clinic of Strasbourg, France, from 1959 to 1995. COMl'LICATIONS The necrotizing fasciitis is tnore a clinical form of streptococcal dertnohypodertnal infections, rather than a complication. A significant increase in the frequency of necrotizing fasciitis caused by group A streptococci has recently been noted.'^ Serotypes 1, 3, 12, and 28 are usually involved; the virulence of some serotypes tnight be explained by the acquisition of a toxic gene. But in the retrospective analysis of Bernard et al.,"* the annual incidence of necrotizing fasciitis was much lower and more constant. The "toxic-strep" sytidrome consists of a Strepto- coccus pyogenes group A infection, complicated by tnulti-organ failure. This syndrome has been described in close relation to erysipelas by Ligtenberg et al." The iticidence of deep vein throtnbosis in patients with erysipelas of the leg is unknown. In our report,' we observed deep throtnbophlebitis in 0.9% and su- perficial thrombophlebitis in 1.3% of patients in a se- ries of .529 cases with erysipelas. In a prospective study of 40 patients with erysipelas of the leg, Mahe et al.''' looked for deep vein throtnbo- sis, using systematically pulsed Doppler vein exploration combined with ultrasonography and, when necessary, a second Doppler exatnination and phlebography. Six cases of deep vein throtnbosis were diagnosed (among them, five patients at high risk for deep venous throm- bosis; in these cases, it had never been suspected at the clinical examination). THERAPY Erysipelas requires antimicrobial therapy. Treatment regimens vary widely, in both the dermatologic and in- fectious disease literature. Streptococcus pyogenes con- tinues to be susceptible to S-lactam antimicrobials; numerous studies have detnonstrated the clinical effica- cy of penicillin; classically, a macrolide is used only, when there is a documented allergy to penicillin. It is not necessary to cover Staphylococcus aureus, but if penicillin, given as first line treattnent, fails, the diagno- sis of the streptococcal origin has to be recotisidered. Two drugs—not available in the United States—are very useful in the treatment of erysipelas: roxithrotnycin and pristinamycin. Bernard et al." cotiducted a prospective, randotnized, multicenter trial to evaluate the efficacy and safety of roxithrotnycin (150 mg b.i.d. orally) and penicillin (2.5 tnillion units (Mil) x 8, daily tv until apyrexial, then 6 MtJ daily orally) in the treatment of erysipelas. Both antitnicrobials were continued utitil the patient had been apyrexial for at least 10 days. The overall efficacy rates were 84 % (26/31) in the rox- ithrotnycin group and 76 % (29/38) in the penicillin group. Oral roxithromycin was also well tolerated treatmetit (no side effects, whereas skin eruptions oc- curred in two cases in the penicillin group). Treattnent with pristinatnycin, continued until the patient had been apyrexial for 10 days (3 g daily orally), give the satne results; in a prospective trial, Bernard et al."' re- ported the efficacy rate to be 86%. Quinolones and cephalosporins are not itidicated in the treatment of erysipelas. The adtninistration of clitidatnyciti in addi- tion to penicillin seetns advisable in patients with strep- tococcal toxic-shock syndrome.'^ Recurretices of erysipelas are especially prevaletit in patients suffering frotn local impairtnetit of circulation. The tnechanistns of recurrence are notwell utider- stood; pharytigeal carrier state of streptococci group A can be associated with or precede the relapse. In these cases, antimicrobial prophylaxis tnay be introduced for a longer titne, by daily adtninistration of penicilliti V orally or intratnuscularly (i.e., benzathine penicillin 2.4 MtJ every 3 weeks for 1 or 2 years). Recurrences of erysipelas appeared to be reduced, but the effect is not dratnatic. Continuous antibiotic prophylaxis is indicat- ed only in patients with a high recurrence rate."* CONCLUSIONS Erysipelas has chatiged. On an epidemiologic basis, iso- lated cases are still the rule with epidemic forms being rare; however, currently, a dratnatic increase in the inci- dence of this infection has been observed, whereas the annual incidence of necrotizing fasciitis is more constant. On a diagnostic basis, laboratory investigations are becoming iticreasitigly informative, given the advetit of new diagnostic techniques such as detection of strepto- cocci in skin specimens with direct itntnunofluorescence. Therapeutically, penicillin is the antitnicrobial agreed upon by all; however, the macrolides are also very use- ful for this itidicatioti. DRUG NAMES benzathine penicillin G: Pertnapen clindamycin: Cleocin 780 Hrysipeias Ciiaiticr and Grosshans penicillin V: Compocillin V, Ledercilliti VK, Robicillin-VK, V-Cillin, and others penicillin V Betizathine: Pen-Vee pristinamycin BAN roxithromyciti USAN REFERENCES 1. Chartier C, Grosshatis E. Erysipelas. Int J Dertnarol 1990; 29:459-467. 2. Grosshans E. The red face: erysipelas. Clin Dertnatol 1993; 11:307-313. 3. Solberg CO, Chelsom J. Infeksjoner med gruppe A- streptokokker. Nord Med 1995; 110:50-52. 4. Bernard P, Bedane C, Mounier M, et al. Dertnohypo- dermites bacterietities de l'adulte. Incidence et place de l'etiologie streptococcique. Atin Dertnatol Venereol 1995; 122:495-500. 5. Bernard P. Dertno-hypodermal bacterial infections. Current concepts. Fur J Med 1992; 1:97-104. 6. Bratton RL, Nesse RE. St Anthotiy's fire: diagnosis and management of erysipelas. Am Fani Physician 1995; 51:401-404. 7. Eeingold DS, Weinberg AN. Group A streptococcal in- fections. An old adversary reetnerging with new tricks .' Arch Dertnatol 1996; 132:67-70. 8. Norrby A, Eriksson B, Norgren M, et al. Virulence properties of erysipelas-associated group A streptococci. EurJ Cliti Microhiol Infect Dis 1992; 11:1 136-1 143. 9. Cox NH, Knovvles MA, Porteus ID. Pre-septal celluliris and facial erysipelas due to Moraxella species. Clin F"xp Dertnatol 1994; 19:321-323. 10. Crickx B, Chevron F, Sigal-Nahum M, et al. Erysipele: dontiees epidemiologiques, clitiiques et therapeutiques. Ann Dertnatol Venereol 1991; 1 18:1 1-16. 1 1. Maitietti C, Bernard P, Saurat JH. Hip surgery skin ccl- luhtis. Eur J Med 1992; 1:52-54. 12. Simonart T, Simonart JM, Schoutens C, et al. Epidemi- ologie et etiopathogenie des fasciites necrosantes et du sytidrotne de choc streptococcique. Ann Dermatol Venereol 1993; 120:469-472. 13. Ligtenberg G, Blankestiin PJ, Koomans HA. Erysipelas: not always innocent. Nerh J Med 1993; 43:179-182. 14. Mahe A, Destelle JM, Bruet A, et al. Thromboses veineuses profondes au cours des erysipeles de jamhe. Etude prospective de 40 observatiotis. Presse Med 1992; 21:1022-1024. 15. Bernard P, Plantin P, Roger H, et al. Roxithrotnycin ver- sus penicillin in the treatment of erysipelas in adults: a cotnparative study. BrJ Dertnatol 1992; 127:155-159. 16. Bernard P, Risse L, Bonnetblanc JM. Trairement des dertnohypodertnites aigues bacteriennes de l'adulte par la pristinainyciiie: etude ouverte de 42 malades. Ann Dertnatol Vetiereol 1996; 123:16-20. 17. Bisno AL, Stevetis DL. Streptococcal infections of skin atid soft tissues. N Etigl J Med 1996; 334:240-245. 18. Sjoblotn AĈ , Friksson B, Jorup-Ronstrom C, et al. An- tihiotic prophylaxis in recurrent erysipelas. Infection 1993; 21:390-.S93. Drug Eruptions It is well known tbat tbe introduction of various drugs into tbe stomach is some- times followed by the appearance of a cutaneous eruption, and that the connec- tion between tbem is one of cause and effect. One of tbe tnost cotnmon of tbe so-called medicinal eruptions, consisting of tbe acnefortn, pustular, and some- times furuncular lesions due to the administration of tbe iodide or bromide of potassium, has been attributed to direct irritation of tbe glands of tbe skin be- cause of tbe attempted cutaneous elimination of the drug from tbe system, and tbe detection of iodine and bromine in the pus obtained from the cutaneous le- sions gives to this idea apparent support. Tbe histological character of sucb le- sions, however, according to Duckworth, does not indicate that the cutaneous glands are primarily involved, wbile more recent microscopic investigation shows that, although lesions caused by the ititernal use of iodine and brotnine prepara- tions may originate in dilatation and cellular infiltration of the capillary network whicb surroutids the sebaceous glands, the same process also affects blood-vessels wbicb bave nothing to do witb the glandular apparatus of tbe skin, and may de- velop to sucb an extent that the consequent lesions represent a pustular dertnati- tis. Tbe attribute of an eliminative patbogenesis, tberefore, cannot be given to tbis variety of eruption until more evidence in its favor is forthcoming, altbough the occasional inception of tbe process in tbe lieigbborhood of tbe cutaneous glands is suggestive of the ancient maxim, ubi irritatio, ibi affluxus. From Tilden GH. Dermatitis medicament (Eczema chapter). In: Piffard HG, Morrow PA, eds. J Cutan Venereol Diseases. Vol 3. Netv York: W Wood, 1885:347. 781