Relapsing-remitting type multiple sclerosis with olfactory hallucinosis and secondary delusions.

Multiple sclerosis is frequently associated with psychiatric symptoms. In more than 50% of the patients symptoms of affective disorder or cognitive decline are observed. A significantly smaller proportion of these individuals develop psychotic symptoms usually during the course of the disease. In this report the rare clinical case of a woman who developed olfactory hallucinations and delusional disorder after 13 years of relapsing-remitting type multiple sclerosis is described.