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Erythema induratum
Classification and external resources
ICD-10	A 18.4 (ILDS A18.482)
ICD-9	017.1
DiseasesDB	1272
eMedicine	derm/135
MeSH	D004891

Bazin disease (or "Erythema induratum") is a panniculitis on the back of the calves.^[1]

It was formerly thought to be a reaction to the tuberculum bacillus. It is now considered a panniculitis that is not associated with a single defined pathogen.^[2]

It occurs mainly in women, but is very rare now.

[edit] History

It is named for Pierre-Antoine-Ernest Bazin.^[3]^[4]

[edit] References

^ erythema induratum at Dorland's Medical Dictionary
^ Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease (7th ed.). St. Louis, Mo: Elsevier Saunders. pp. 1265. ISBN 0-7216-0187-1.
^ synd/102 at Who Named It?
^ P. A. E. Bazin. Leçons théoriques et cliniques sur la scrofule, considérée en ellemême et dans ses rapports avec la syphilis, la dartre et l'arthritis. 2nd edition, Paris, 1861. Page 145 and 501.

[edit] External links

221577233 at GPnotebook
PatientPlus

Infectious diseases · Bacterial diseases: G+ (primarily A00–A79, 001–041, 080–109)

Firmicutes/
(low-G+C)

Bacilli

Lactobacillales
(Cat-)

Streptococcus

Alpha hemolytic	optochin susceptible: S. pneumoniae (Pneumococcal infection) optochin resistant: S. viridans (S. mitis, S. mutans, S. oralis, S. sanguinis, S. sobrinus, milleri group)

Beta hemolytic	A, bacitracin susceptible: S. pyogenes (Scarlet fever, Erysipelas, Rheumatic fever, Streptococcal pharyngitis) B, bacitracin resistant, CAMP test+: S. agalactiae

Gamma hemolytic	D, BEA+: Streptococcus bovis

Enterococcus

BEA+: Enterococcus faecalis (Urinary tract infection) · Enterococcus faecium

Bacillales
(Cat+)

Staphylococcus	Cg+ S. aureus (Staphylococcal scalded skin syndrome, Toxic shock syndrome, MRSA) Cg- novobiocin susceptible (S. epidermidis) · novobiocin resistant (S. saprophyticus)

Bacillus	Bacillus anthracis (Anthrax) · Bacillus cereus (Food poisoning)

Listeria	Listeria monocytogenes (Listeriosis)

Clostridia

Clostridium (spore-forming)	motile: Clostridium difficile (Pseudomembranous colitis) · Clostridium botulinum (Botulism) · Clostridium tetani (Tetanus) nonmotile: Clostridium perfringens (Gas gangrene, Clostridial necrotizing enteritis)

Peptostreptococcus (non-spore forming)	Peptostreptococcus magnus

Mollicutes

Mycoplasmataceae	Ureaplasma urealyticum (Ureaplasma infection) · Mycoplasma genitalium · Mycoplasma pneumoniae (Mycoplasma pneumonia)

Anaeroplasmatales	Erysipelothrix rhusiopathiae (Erysipeloid)

Actinobacteria/
(high-G+C)

Actinomycineae

Actinomycetaceae	Actinomyces israelii (Actinomycosis) · Tropheryma whipplei (Whipple's disease)

Propionibacteriaceae	Propionibacterium acnes

Corynebacterineae

Mycobacteriaceae

M. tuberculosis/M. bovis	Tuberculosis: Ghon focus/Ghon's complex · Pott disease · brain (Meningitis, Rich focus) · cutaneous (Scrofula, Bazin disease, Lupus vulgaris, Prosector's wart) · Miliary · Tuberculous pericarditis

M. leprae	Leprosy

Nontuberculous	R1: M. kansasii · M. marinum R2: M. gordonae R3: M. avium complex (MAA, MAP, MAI, Lady Windermere syndrome) · M. ulcerans (Buruli ulcer) · M. haemophilum R4: M. fortuitum · M. chelonae

Nocardiaceae

Nocardia asteroides/Nocardia brasiliensis (Nocardiosis) · Rhodococcus equi

Corynebacteriaceae

Corynebacterium diphtheriae (Diphtheria) · Corynebacterium minutissimum (Erythrasma) · Corynebacterium jeikeium

Bifidobacteriaceae

Gardnerella vaginalis

Soft tissue disorders / Rheumatism / Connective tissue arthropathy (M65-M79, 725-727)

Capsular

Noncapsular

Fasciopathy	Fasciitis: Plantar · Nodular · Necrotizing · Eosinophilic

Fibromatosis/contracture	Dupuytren's contracture · Peyronie's disease · Plantar fibromatosis · Aggressive fibromatosis · Knuckle pads

Tendinopathy/ Enthesopathy/Enthesitis	upper limb (Adhesive capsulitis of shoulder, Rotator cuff tear, Golfer's elbow, Tennis elbow) lower limb (Iliotibial band syndrome, Patellar tendinitis, Achilles tendinitis, Calcaneal spur, Metatarsalgia) · Bone spur other/general: Tendinitis · Tendinosis

joint navs: anat, non-congenital arthropathies/deformities/dorsopathies/soft tissue arthropathy/congenital, eponymous signs, proc
muscle, DF+DRCT navs: anat/hist/physio, acquired myopathy/congenital myopathy/neoplasia, symptoms+signs/eponymous, proc

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