Title: New Onset Unprovoked Seizures in Elderly: Etiology and Challenges in Management

Authors: Dr M.Thangaraj, Dr M.Arun Kumar, Dr K.Balamurali, Dr S.Elangovan

 DOI:  https://dx.doi.org/10.18535/jmscr/v5i6.216

Abstract

Contrary to popular belief the incidence of epilepsy and seizures increases in elderly people. New onset epilepsy in elderly often has underlying etiology including cerebrovascular diseases, neurodegenerative disorders, intracranial space occupying lesions and post traumatic epilepsy. An acute symptomatic seizure provoked by metabolic derangement, encephalopathy or meningitis, though commonly seen in elderly patients, can’t be termed as unprovoked seizures. Making a proper diagnosis in these patients may be difficult because many times history is not clear. Moreover elderly patients make a heterogeneous group of people. Many of them may be quite healthy while others may have chronic debilitating diseases involving nervous system like dementia, Alzheimer's and Parkinson’s disease etc. With improvement in quality of life and availability of advanced health care facilities there is a rise in life expectancy of elderly individuals. This increase in life expectancy has an effect of increase in number of elderly people which consequently means there will be increasing number of patients having newly onset epilepsy beyond the age of 60. Not only the diagnosis is challenging in these patients but also treatment is difficult. Age related physiological changes, presence of co-morbidities, financial constrains and neglect by family members are some of the practical hurdles faced by treating physician while treating these patients. Treatment needs to be carefully selected because many elderly patients are expected to be already on multiple medications due to co-morbidities. Anti-epileptic drugs in these patients needs to be chosen keeping in mind Side effects, drug interactions and tolerability of the prescribed drugs We conducted a prospective study comprising of patients who had first episode of unprovoked seizures at or above the age of 60 years. The seizure characteristics, etiology, radiological abnormalities and response to treatment in these patients were studied in detail.

Keywords: Unprovoked Seizures, elderly, co-morbid conditions, anti-epileptic drugs.

References

1.      Brodie MJ, Kwan P . Epilepsy in elderly people. BMJ. 2005 Dec 3; 331(7528):1317-22.

2.      DeLorenzo RJ, Hauser WA, Towne AR, Boggs JG, Pellock JM, Penberthy L, Garnett L, Fortner CA, Ko D, A prospective, population-based epidemiologic study of status epilepticus in Richmond, Virginia. Neurology. 1996 Apr; 46(4):1029-35.

3.      Liu S, Yu W, Lü Y. The causes of new-onset epilepsy and seizures in the elderly.  Neuropsychiatric Disease and Treatment. 2016;12:1425-1434.

4.      Feinstein AR. The pre-therapeutic classification of co-morbidity in chronic disease. J Chronic Dis. 1970 Dec; 23(7):455-68.

5.      Beghi E. Efficacy and tolerability of the new antiepileptic drugs: comparison of two recent guidelines. Lancet Neurol. 2004 Oct;3(10):618-21.

6.      Acharya JN, Acharya VJ. Epilepsy in the elderly: Special considerations and challenges. Annals of Indian Academy of Neurology. 2014;17(Suppl 1):S18-S26.

7.      Haut SR, Katz M, Masur J, Lipton RB. Seizures in the elderly: Impact on mental status, mood and sleep. Epilepsy & behavior : E&B. 2009;14(3):540-544.

8.      Olafsson E, Ludvigsson P, Gudmundsson G, Hesdorffer D, Kjartansson O, Hauser WA.

9.      Incidence of unprovoked seizures and epilepsy in Iceland and assessment of the epilepsy syndrome classification: a prospective study. Lancet Neurol. 2005 Oct; 4(10):627-34.

10.  Mauricio EA, Freeman WD. Status epilepticus in the elderly: differential diagnosis and treatment. Neuropsychiatric Disease and Treatment. 2011;7:161-166.

11.  Hauser WA. Epidemiology of epilepsy and seizures in the elderly. In: Rowan AJ, Ramsay ER, editors. Epilepsy in the Elderly. Boston: Butterworth Heinemann; 1997. pp. 7–18

12.  Adachi N, Kanemoto K, Muramatsu R, et al. Intellectual prognosis of status epilepticus in adult epilepsy patients: analysis with Wechsler Adult Intelligence Scale-revised. Epilepsia. 2005;46(9):1502–1509.

13.  Leppik IE, Birnbaum AK. Epilepsy in the elderly. Ann N Y Acad Sci. 2010;1184:208–224.

14.  Logroscino G, Hesdorffer DC, Cascino GD, Annegers JF, Bagiella E, Hauser WA. Long-term mortality after a first episode of status epilepticus. Neurology. 2002;58:537–541.

15.  Kellinghaus C, Loddenkemper T, Dinner DS, Lachhwani D, Lüders HO. Seizure semiology in the elderly: a video analysis. Epilepsia. 2004 Mar;45(3):263-7.

16.  Urbach H, Schramm J, Soeder BM, Becker AJ, Voltz R, Vincent A, Elger CE, Bien CG,. Limbic encephalitis as a precipitating event in adult-onset temporal lobe epilepsy. Neurology. 2007 Sep 18; 69(12):1236-44.

17.  Pandis D, Scarmeas N. Seizures in Alzheimer Disease: Clinical and Epidemiological Data. Epilepsy Currents. 2012;12(5):184-187.

18.  Asconapé JJ, Penry JK. Poststroke seizures in the elderly. Clin Geriatr Med. 1991 Aug;7(3):483-92. Review. PubMed

19.  Hermann B, Seidenberg M, Sager M, et al. Growing old with epilepsy: The neglected issue of cognitive and brain health in aging and elder persons with chronic epilepsy. Epilepsia. 2008;49(5):731-740.

20.  Tian H-J, Wang X-Q, Shi X-B, Lang S-Y. Evaluation of clinical features of elderly epilepsy in China. International Journal of Clinical and Experimental Medicine. 2015;8(2):2399-2404.

21.  Sinha S, Satishchandra P, Kalband BR, Bharath RD, Thennarasu K. Neuroimaging observations in a cohort of elderly manifesting with new onset seizures: Experience from a university hospital. Annals of Indian Academy of Neurology. 2012;15(4):273-280.

22.  Kesavadas C, Thomas B. Clinical applications of functional MRI in epilepsy. The Indian Journal of Radiology & Imaging. 2008;18(3):210-217.

23.  Maganti RK, Rutecki P. EEG and epilepsy monitoring. Continuum (Minneap Minn). 2013 Jun;19(3 Epilepsy):598-622.

24.  Pandian JD, Cascino GD, So EL, Manno E, Fulgham JR. Digital video-electroencephalographic monitoring in the neurological-neurosurgical intensive care unit: clinical features and outcome. Arch Neurol. 2004 Jul;61(7):1090-4.

25.  Poza JJ. Management of epilepsy in the elderly. Neuropsychiatric Disease and Treatment. 2007;3(6):723-728.

26.  Jankovic SM, Dostic M. Choice of antiepileptic drugs for the elderly: possible drug interactions and adverse effects. Expert Opin Drug Metab Toxicol. 2012 Jan;8(1):81-91.

Corresponding Author

Dr M.Arun Kumar

1st Year DM Neurology Resident, Department Of Neurology

Thanjavur Medical College Thanjavur