The manufacture and maintenance of drums used in photocopy machines involves use of a selenium alloy. A worker employed in this type of job for 6 mo presented with alopecia aereta which later deteriorated to alopecia universalis. As selenium intoxication is known to present with a similar clinical picture, selenium levels in blood and nails of this subject were estimated and compared with those found in other workers. We report a case of alopecia universalis due to occupational selenium intoxication.