Aidan: Created page with "== Background == * Caused by Bartonella henselae and Bartonella quintana * Classically occurs in patients with advanced HIV == Clinical Manifestations == * Diss..."

2020-09-17T00:49:28Z

Created page with "== Background == * Caused by Bartonella henselae and Bartonella quintana * Classically occurs in patients with advanced HIV == Clinical Manifestations == * Diss..."

New page

== Background ==

* Caused by [[Bartonella henselae]] and [[Bartonella quintana]]
* Classically occurs in patients with advanced [[HIV]]

== Clinical Manifestations ==

* Disseminated skin infection
* Characterized by protuberant, reddish-purple, berry-like nodules
** Often surrounding dry scale
** Can bleed profusely
** More common on upper extremities
** May arise in crops of papules and nodules
* Can affect essentially all internal organs as well
* Subcutaneous lesions are more common with [[Bartonella quintana]]
* Hepatic and splenic [[peliosis]] are more common with [[Bartonella henselae]]
** Neovascular proliferation

== Differential Diagnosis ==

* Essentially indistinguishable from [[Kaposi sarcoma]] in patients with HIV
* [[Pyogenic granuloma]] is the most notable differential diagnosis in immunocompetent hosts

== Diagnosis ==

* Histopathology, culture, and PCR of skin lesions
* Notify lab, as may need prolonged incubation time

== Management ==

* Treated by [[Is treated by::erythromycin]] 500 mg PO q6h or [[Is treated by::doxycycline]] 100 mg PO q12h for 3 or more months
** Should start to respond within 3 to 4 weeks
** Alternatives include [[fluoroquinolones]] or [[azithromycin]]
* Treatment of the underlying immunodeficiency, if applicable

[[Category:Skin and soft tissue infections]]
[[Category:Immunocompromised hosts]]

Bacillary angiomatosis - Revision history

Aidan: Created page with "== Background == * Caused by Bartonella henselae and Bartonella quintana * Classically occurs in patients with advanced HIV == Clinical Manifestations == * Diss..."