Bacillary angiomatosis


Epithelioid angiomatosis; bartonellosis; bacillary ailuronosis; disseminated cat-scratch disease


Infection caused by closely related gramnegative bacteria, Bartonella henselae and Bartonella quintana, occurring mostly in immunocompromised patients


Gram-negative bacillary infection results from exposure to flea-infested cats with B henselae and the human body louse for B quintana

Clinical manifestation

Globular angiomatous papules or nodules resembling pyogenic granulomas; viola ceous nodules resembling Kaposi's sarcoma; lichenoid violaceous plaques; subcutaneous papules or nodules, with or without ulceration

Differential diagnosis

Kaposi's sarcoma; glomangioma; verruga peruana; angiokeratoma; hemangioma; pyogenic granuloma; gram-positive bacterial abscess; nodal myofibromatosis; melanoma


Erythromycin*; azithromycin; clarithromy-cin; doxycycline


Manders SM (1996) Bacillary angiomatosis. Clinics in Dermatology 14(3)1295-299

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