Trichomycosis axillaris

Trichomycosis axillaris

An armpit with variably encrusted hairs
Classification and external resources
Specialty	dermatology
ICD-10	A48.8, L08.8 (ILDS L08.88)
ICD-9-CM	039.0
DiseasesDB	32451
eMedicine	derm/601

Trichomycosis axillaris is a superficial bacterial colonization of the hair shafts in sweat gland–bearing areas, such as the armpits and the groin. It is a trivial disease of worldwide occurrence that is believed to be caused by the genus Corynebacteria (mostly Corynebacterium tenuis).^[1]

Presentation

It is characterised by yellow, orange, black or red granular nodules, coatings, and concretions that stick to the hair shaft. Usually the condition is symptomless and all that is noticed are sweaty, smelly armpits. Hair shafts may also swell appearing more noticeable after bathing. It results from corynebacterial overgrowth on hair shafts in moist regions of the body and predominantly affects axillary hair (under arms), and to a lesser extent, pubic hair (Trichomycosis pubis). It is caused by several species of the gram-positive diphtheroid Corynebacterium, not by a fungus as the name may imply.

Treatment

The fastest method of treatment is to shave the affected hair. Daily cleansing with soap and water and application of benzoyl peroxide (wash or gel formulations) cures the infection. Regular use of antiperspirants aids in prevention by reducing axillary hyperhidrosis (i.e. its staying moist). Topical antibiotic preparations such as erythromycin or clindamycin is occasionally required to eliminate the infection. "Drying" powders may assist treatment.

References

O'Dell ML (1998). "Skin and wound infections: an overview". Am Fam Physician. 57 (10): 2424–32. PMID 9614412. Full text
http://www.emedicine.com/derm/topic601.htm
http://dermnetnz.org/bacterial/trichomycosis-axillaris.html

↑ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. p. 1089. ISBN 1-4160-2999-0.

External links

DermNet bacterial/trichomycosis-axillaris

Bacterial skin disease (L00–L08, 680–686)

Gram +ve

Firmicutes	Staphylococcus Staphylococcal scalded skin syndrome Impetigo Toxic shock syndrome Streptococcus Impetigo Cutaneous group B streptococcal infection Streptococcal intertrigo Cutaneous Streptococcus iniae infection Erysipelas / Chronic recurrent erysipelas Scarlet fever Corynebacterium Erythrasma Listeriosis Clostridium Gas gangrene Dermatitis gangrenosa Mycoplasma Erysipeloid of Rosenbach

Actinobacteria	Mycobacterium-related: Aquarium granuloma Borderline lepromatous leprosy Borderline leprosy Borderline tuberculoid leprosy Buruli ulcer Erythema induratum Histoid leprosy Lepromatous leprosy Leprosy Lichen scrofulosorum Lupus vulgaris Miliary tuberculosis Mycobacterium avium-intracellulare complex infection Mycobacterium haemophilum infection Mycobacterium kansasii infection Papulonecrotic tuberculid Primary inoculation tuberculosis Rapid growing mycobacterium infection Scrofuloderma Tuberculosis cutis orificialis Tuberculosis verrucosa cutis Tuberculous cellulitis Tuberculous gumma Tuberculoid leprosy Cutaneous actinomycosis Nocardiosis Cutaneous diphtheria infection Arcanobacterium haemolyticum infection Group JK corynebacterium sepsis

Gram -ve

Proteobacteria	α: Endemic typhus Epidemic typhus Scrub typhus North Asian tick typhus Queensland tick typhus Flying squirrel typhus Trench fever Bacillary angiomatosis African tick bite fever American tick bite fever Rickettsia aeschlimannii infection Rickettsialpox Rocky Mountain spotted fever Human granulocytotropic anaplasmosis Human monocytotropic ehrlichiosis Flea-borne spotted fever Japanese spotted fever Mediterranean spotted fever Flinders Island spotted fever Verruga peruana Brill–Zinsser disease Brucellosis Cat-scratch disease Oroya fever Ehrlichiosis ewingii infection β: Gonococcemia/Gonorrhea/Primary gonococcal dermatitis Melioidosis Cutaneous Pasteurella hemolytica infection Meningococcemia Glanders Chromobacteriosis infection γ: Pasteurellosis Tularemia Vibrio vulnificus Rhinoscleroma Haemophilus influenzae cellulitis Pseudomonal pyoderma / Pseudomonas hot-foot syndrome / Hot tub folliculitis / Ecthyma gangrenosum / Green nail syndrome Q fever Salmonellosis Shigellosis Plague Granuloma inguinale Chancroid Aeromonas infection ε: Helicobacter cellulitis

Other	Syphilid Syphilis Chancre Yaws Pinta Bejel Chlamydia infection Leptospirosis Rat-bite fever Lyme disease Lymphogranuloma venereum

Unspecified
pathogen

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Trichomycosis axillaris

Presentation

Treatment

See also

References

External links