Pregnancy is rare in Parkinson's disease (PD). In the literature on st
udies of antiparkinsonian drugs in animals during pregnancy, there are
reports on malformations of the skeletal and circulatory system. Howe
ver, the majority of studies in animals have not shown ally teratogeni
city. Amantadine has been teratogenic in rats and selegiline has cause
d neurochemical and behavioral alterations in rats when coadministered
with clorgyline, The published experience with humans consists of 35
pregnancies among 26 women suffering from PD, including this report, a
nd a number of cases treated with antiparkinsonian agents for other re
asons. With the exception of the majority of the cases where amantadin
e was used, complications have been rare. However. there are indicatio
ns that suggest a possible risk of a woman's parkinsonism worsening in
connection with pregnancy. We also report the case of a woman with PD
who was treated with L-dopa-benserazide during an uncomplicated pregn
ancy and gave birth to a healthy boy without experiencing any worsenin
g of her PD.