Terminally Ill Access to Treatment Act of 1998

Terminally Ill Access to Treatment Act of 1998 - Directs the Secretary of Health and Human Services to approve for treating the terminally ill drugs and devices that have not received Food and Drug Administration (FDA) final approval and have not been shown to be unsafe. Declares that it is not illegal for a health care practitioner to administer a drug or device approved under this Act if the practitioner has notified the patient that the drug or device is experimental and not FDA-approved, and has received written approval from the patient or the patient's representative.

Requires: (1) a practitioner to stop treatment and report to the Secretary if a drug or device causes acute harm; and (2) the Secretary to give public notice of an approved drug's or device's benefits or harm.