Examination of the Microbial Spectrum in the Etiology of Erythema Nodosum: A Retrospective Descriptive Study

Table 3

Infections and identified microbes in patients with erythema nodosum ().

Infections	Identified microbes	Patients with EN
URTI		19 (23.4%)
Streptococcal	Streptococci ()	13 (16%)
Nonstreptococcal	—	3 (3.7%)
Viral	—	3 (3.7%)
GIT infection		3 (3.7%)
Intestinal infection	Blastocystis hominis ()	2 (2.5%)
Stomach infection	Helicobacter pylori ()	1 (1.2%)
UTI	Escherichia coli ()	3 (3.7%)
Pneumonia	Mycoplasma pneumoniae ()	2 (2.5%)
Vaginitis	Gardnerella vaginalis (); Candida albicans ()	2 (2.5)
Breast abscess	Staphylococcus aureus ()	1 (1.2%)
Rectal abscess	—	1 (1.2%)
Tuberculosis	Mycobacterium tuberculosis ()	1 (1.2%)

EN: erythema nodosum; URTI: upper respiratory tract infection; GIT: gastrointestinal tract; UTI: urinary tract infection.