Infectious Disease Compendium

Bacillary angiomatosis


Red bumps in HIV patients. Biopsy to make the diagnosis.

Epidemiologic Risks

HIV and cats. Bad combination. Actually, anything and cats is a bad combination. Except, perhaps, a speeding auto.


Due to B. henselae.

Ddx: other things that cause red bumps in HIV include Kaposi's sarcoma, MAI, cryptococcus.

Empiric Therapy

Empiric therapy, is, one must admit, moronic. Given the differential mentioned above, it makes more sense to, oh, I don't know, MAKE A DIAGNOSIS. Then treat with azithromycin OR erythromycin OR doxycycline OR a quinolone.



ICD9 Codes (Soon to be supplanted by ICD10)

Bacillary angiomatosis 083.8.