8 Most of the clinicians satisfied with "age of retirement in public service" as 60 years in Europe, Africa, Asia and Australia and 65 years in north and south America for the definition of "senile age groups", while WHO has agreed with 60 years as "old age" As principal investigator, has been working on different aspects of tremors for the last ten years, I noticed that the senile tremors can be classified in to 1, enhanced physiological tremors which are usually mild in intensity and called as physiological senile tremors, 2, a variant of essential tremors where no specific pathology can be detected on investigations are almost moderate to severe in intensiy and labelled as pathological senile tremors, 3, tremors in old age which are related with definite pathology, i.
All those who had pathological senile tremors did not show bradykinesia and rigidity and all of them had kinetic type of tremors rather resting tremors.
NT=No Tremors, PST=Physio Senile Tremors, PhT =Patho Senile Tremors
5) than these who had physiological senile tremors or pathological senile tremors (mean age 71.
NT=No tremors, PST=Physio Senile Tremors, PhT= Pathological Senile Tremors