The reference therapy for erysipelas is penicillin G given intravenously. S
ince I.V. injections are difficult to perform at home, hospitalization woul
d seem mandatory. However, many cases of erysipelas are actually treated at
home (cf. results of the 2 surveys concerning general practice). The lack
of studies on non-hospitalized erysipelas patients makes it difficult to an
swer the following question: "What are the criteria for primary and seconda
ry hospitalization?" The literature suggests, mostly indirectly that the re
asons of primary hospitalization are: the severity of general (fever, impai
rment of general condition, confusion) or local (blisters, purpura, skin ne
crosis, extent of the cellulitis, facial involvement) signs and symptoms, o
ld age, associated diseases (diabetes, alcoholism, obesity, cardiovascular
disease), the practical modalities of the treatment (penicillin given intra
venously, bed rest), or the necessity to eliminate deep venous thrombosis.
The reasons for secondary hospitalization are above all the (true or suspec
ted) failure of oral antibiotherapy at home, or the occurrence of local com
plications. True criteria of primary or secondary hospitalization remain to
be defined by adequate prospective studies performed in both in and outpat
ients. They will depend of the emerging possibilities of successfully treat
ing erysipelas by oral antibiotics. (C) 2000 Editions scientifiques et medi
cales Elsevier SAS.