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Epilepsy in the elderly
Purpose:
The aim of this study was to evaluate the clinical characteristics of elderly patients with epilepsy.
Methods:
We retrospectively reviewed the clinical records of 190 patients (104 males and 86 females) aged 60 years or older at the time of study.
Results:
Epilepsies were classified as generalized in 33 patients (17.4%), partial in 145 (76.3%), and undetermined in 12 (6.3%). Twenty-nine of 33 patients with generalized epilepsy were idiopathic, whereas all patients with partial epilepsy were symptomatic. Symptomatic partial epilepsy (SPE) began at all ages (2 to 81 years). Patients with early onset (< 20 years) showed the most unfavorable course in both seizure control and social adaptability. Patients with late onset (50 years or older) had no family history of epilepsy, and half of them had a past history of cerebrovascular disease or head injury as a presumed etiology. In patients with idiopathic generalized epilepsy (IGE), 25 of 29 had early onset, and a family history of epilepsy was found in 31%. Nineteen patients continued to have seizures after 50 years of age, albeit infrequently. Furthermore, 10 of them showed exacerbation around the age of 50.
Conclusions:
Most of the late onset epilepsies were SPE with a relatively good prognosis. General belief has held that seizure outcome in IGE is favorable, but some IGE patients show an increased seizure propensity in old age.