Denial of alcohol or drug abuse, and of its possible consequences, can comp
licate medical and psychiatric care. We present the case of an HIV-positive
bus driver with substance abuse who initially denied ongoing use of alcoho
l and of other drugs, but later admitted to both. The psychiatrist's duty t
o protect the patient's confidentiality, coupled with concerns about public
safety, created an ethical dilemma. In discussing this dilemma we stress t
he importance of preserving confidentiality, both to facilitate treatment a
nd also to further the safety of others. (C) 2001 Elsevier Science Inc. All
rights reserved.