An attempt was made to establish a decision algorithm for the treatment of
idiopathic Parkinson's disease at various stages and in different subgroups
such as akinetic-rigid or tremor dominance type. We suggest treating young
patients with selegiline and a dopamine agonist. In the tremor dominance t
ype we use either budipine or a dopamine agonist. Due to levodopa-induced d
yskinesia, we try to avoid levodopa in the early stages of the disease and
use it only later in more advanced situations in a combination therapy with
dopamine agonists. Since IPS is not only based upon dopamine deficiency bu
t also on resulting glutamatergic overstimulation, we advocate the use of a
glutamate antagonist such as amantadine or budipine. Catechol-O-methyl inh
ibitors are very helpful when wearing-off occurs. Anticholinergics are only
used in the early stages of tremor-dominant IPS because we fear enhancing
the risk of dementia.