Since the recognition of the acquired immunodeficiency syndrome (AIDS)
in 1981, previously rare infections and neoplasms have become increas
ingly common. Bacillary angiomatosis, undescribed in the medical liter
ature prior to 1983, is now second in frequency only to Kaposi's sarco
ma with respect to the cutaneous manifestations associated with human
immunodeficiency virus (HIV) infection. Caused by Rochalimaea henselae
, bacillary angiomatosis is easily treated, when diagnosed early, with
erythromycin. We present two cases of bacillary angiomatosis that pre
sented to Toronto General Hospital and review this new and clinically
interesting entity. The incidence of bacillary angiomatosis will undou
btedly increase as the HIV epidemic ac celerates. Since bacillary angi
omatosis commonly affects the head and neck region, it is important fo
r the otolaryngologist to become increasingly proficient in its diagno
sis and treatment. The current AIDS crisis demands that the otolaryngo
logist become aware not only of bacillary angiomatosis, but also of th
e other cutaneous head and neck manifestations of HIV infection.