medical Definition of bacillary angiomatosis
: a bacterial disease especially of the skin, subcutaneous tissue, and mucous membranes that occurs in immunocompromised individuals (such as those infected with HIV), is characterized chiefly by red or purplish elevated lesions or scaly nodules, may spread to involve bone and internal organs (such as the liver or spleen) with symptoms including fever, malaise, nausea, and abdominal pain, and is caused by either of two bacteria of the genus Bartonella (B. henselae and B. quintana) — called also
epithelioid angiomatosis
