A 54-year-old woman patient had symptoms of stomatitis and asthma foll
owing the provision of a dental prothesis in July 1991. We found a pos
itive patch test reaction to palladium only, without any concomitant m
etallic contact dermatitis; in particular there was no sensitization t
o nickel. This is a very rare sensitization. After replacement of the
dental alloy the clinical symptoms improved.