- Bacillary angiomatosis is caused by Bartonella henselae.
- Infection is characterized by multiple nodular, purplish lesions in the skin and other organs.
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- Erythromycin, 500 mg PO q6h, is the drug of choice.
- Doxycycline, 100 mg PO bid, is also effective.
- Other macrolides and ciprofloxacin, 500 mg PO bid, are alternatives.