Treating adolescents in the health care system raises significant legal and ethical issues related to consent for treatment, confidentiality of communications and records, and payment for care. The law provides many opportunities for adolescents to consent to their own care and offers significant protections of confidentiality. Publicly funded programs provide access to free care for some adolescents, but financial considerations continue to limit access for many poor and low-income adolescents. In addition to legal concerns, serious ethical dilemmas arise, particularly with respect to treatment of special populations of adolescents. Resolution of the legal and ethical questions requires cooperation of professionals from many disciplines.