Computerized databases available from NIOSH and pertinent to dermatological practice and research were described. Specific commercially available files included the NIOSH Technical Information Center (NIOSHTIC) bibliographic database and the Registry of Toxic Effects of Chemical Substances (RTECS). The NIOSHTIC database was described as a resource to identify agents causing specific skin conditions, and RTECS as a compendium of toxicity data. Subject areas covered by these database and commercial vendors providing access to them, were discussed. Other databases maintained by NIOSH were also considered. These included the Document Information Directory System (DIDS), which provides listings of NIOSH documents on a specified subject; and the National Occupational Hazard Survey (NOHS), and the National Occupational Exposure Survey (NOES), which provide data relevant to exposure to specified agents. Requests for DIDS file searches can be directed to the Technical Information Branch, Division of Standards Development and Technology Transfer of NIOSH; those for NOHS and NOES searches to the Hazard Section, Surveillance Branch, Division of Surveillance, Hazard Evaluations, and Field Studies of NIOSH.