Benign Partial with Rolandic Spikes

Author: Doctor Jose Maria Prats-Viñas1 Creation Date: April 2001 Update: July 2004

Scientific Editor: Professor Jaime Campos-Castello

1Unidad de Neurologia Infantil, Hospital de Cruces, Pza de Cruces, s/n, 48903 Baracaldo, Vizcaya, Spain. [email protected]

Abstract Keywords Disease name and synonyms Definition Incidence and prevalence Clinical manifestations EEG manifestations Genetics Incidence of Atypical forms Treatment of side effects References

Abstract Benign epilepsy of childhood with rolandic (centro temporal) spikes (BECRS) is the most frequent of all childhood epileptic syndromes. It is characterized by partial epileptic seizures, mainly during sleep or just before awakening, with involvement of the mouth, face and speech organs or otherwise generalized. The EEG is typical and appears to be the cornerstone of the diagnosis. It is diphasic consisting of high- voltage, spikes or sharp waves followed by slow waves. This pattern used to be called “centro temporal” or “rolandic spikes”. They always disappear by adolescence. It is an extremely rare disease in which antiepileptic drugs (AED) are hardly needed. BECRS represents 13% to 23% of all epileptic patients in childhood. Incidence is 21:100,000 children under 15. A Mendelian dominant pattern of transmission with low penetrance and expressivity limited by age was postulated, the gene is now known to be located on chromosome 15q14.

Keywords Benign epilepsy of childhood with rolandic spikes (BECRS), childhood epileptic syndromes, partial epileptic seizures

Disease name and synonyms and tends to remit and even disappear at • Benign epilepsy of childhood with rolandic adolescence for typical forms. The signs have spikes (BECRS) been described by French neurologists since the • Benign epilepsy of childhood with centro 1950s and named by Beaussart in 1972 (1-3). temporal spikes (BECTS) BECRS has been recognized worldwide (4) and • Silvian epilepsy included by the International League Against Epilepsy (ILAE) as one of the epileptic Definition syndromes. BECRS is the most common epileptic syndrome during childhood. It usually consists of partial Incidence and prevalence seizures, which affect the mouth, face and BECRS represents 13% to 23% of all epileptic speech organs and mainly occur during sleep patients in childhood (5,6). The incidence is

Prats J.M. Benign Partial Epilepsy with Rolandic Spikes. Orphanet Encyclopedia. July 2004. http://www.orpha.net/data/patho/GB/uk-BECRS.pdf 1

21/100,000 children under 15 years. The boy to Genetics girl ratio is 3:2. It always begins after 2 years of Rolandic spikes are detected in 34% of the age and disappears before 16, regardless of the patients' siblings, but only 15% of the latter had clinical manifestations developed during its ever experienced a during their lives course (7,8). (12). For that reason, a Mendelian dominant pattern of transmission, with low penetrance and Clinical manifestations expressivity limited by age was postulated Seizures (9) usually occur during sleep (80% of (13,14). The fact that the focus vanishes during patients), with only 20% occurring in awake adolescence makes it almost impossible to children and 15% in both states. When they follow beyond this age. It is now known that the appear during full consciousness, they are gene is located on chromosome 15q14 (15). clinically characterized by simple partial However, recent twin studies suggest that seizures, which affect the mouth, face and heredity is multifactorial (16). Incidentally, some speech organs, causing, usually with some kind patients with another 'rolandic spikes’ might of grunting noise, mouth and tongue paresthesia coincidentally suffer from another cerebral and drooling. Postictal confusion and amnesia pathology (17). In that case, the evolution could are seldom observed after simple partial be the expression of a genetic factor and behave seizures of BECRS. Because of these clinical in a similar self-limited benign fashion. It should characteristics, the attacks have often been be emphasized that rolandic spikes are not called 'silvian seizures'. Because the crises are pathognomonic of BECRS. For which the very uncommon, they were only exceptionally diagnosis is based on the characteristics of recorded by the EEG tracings. When they affect attack and the clinical manifestations. When very young children, as is the case for 10% of partial complex seizures appear, a diagnosis of patients, the number of crises is high, BECRS should always be considered. generalized or unilateral, prolonged in time and Furthermore, the diagnosis of BECRS probably source of high concern for their relatives. cannot be seriously retained without at least one Usually, they tend to subside at most 3 years EEG tracing showing rolandic spikes. after their onset. Incidence of seizures EEG manifestations It varies widely among patients. A recent meta- The EEG is typical and the cornerstone of the analysis (18) showed that, among the affected diagnosis. It is diphasic consisting of high- population, 15% had only one attack throughout voltage, spikes or sharp waves followed by slow the entire evolution; 62% experienced between 2 waves. This pattern used to be called 'centro and 5 and only 23%suffered more than 5. On the temporal' or 'rolandic'spikes'. They tend to occur other hand, since most of attacks occur during in clusters but can also be isolated. Marked sleep, the social stigma is greatly minimized. activation of rolandic spikes in drowsiness and The invariable good evolution had led some sleep is very usual and 30% of them appear only authors to advise against treating these children during that state (10). Peaks could not be found on antiepileptic drugs (AED) (19), mainly in around 1/3 of EEG done throughout entire because, even in the worst scenario, the activity evolution of BECRS. It may sometimes take span seldom lasts more than 3 years. several months to see these peaks, even if the EEG is taken during sleep. Over 60% of cases Atypical forms show unilateral rolandic spikes, but they tend to In spite of their consistent benignity, during the alternate from one side of the to the other, disease course some patients show life- and follow-up recordings showed that they threatening features with, increasingly severe tended to shift to and away from the centro seizures and learning difficulties, and a decline temporal area, becoming bilateral or appearing of cognitive capabilities. These patients were at other sites, for example frontal or occipital. described as having atypical partial benign The EEG background is normal although mild epilepsy of childhood (20). In such cases, the slowing could be seen in some cases. rate and intensity of seizures rises and new Rolandic spikes can be seen in 1-2% of healthy manifestations appear, mainly drop attacks and children between 5 and 12 years old (11). atypical absences, and the clinical picture could Therefore it is not exceptional to find them in be mistaken for Lennox-Gastaut syndrome. As a children who had never suffered from epileptic general rule, these seizures can be associated seizures and that had undergone an EEG for with neuropsychological impairments, affecting other reasons such as cranial trauma, learning mainly language in Landau-Kleffner syndrome difficulties or headache. (21), opercular epileptic syndrome (22), all of which have increased EEG paroxysms, mainly

Prats J.M. Benign Partial Epilepsy with Rolandic Spikes. Orphanet Encyclopedia. July 2004. http://www.orpha.net/data/patho/GB/uk-BECRS.pdf 2

during sleep, which could generate continuous 9. Loiseau P, Beaussart M. The seizures of spike and wave during slow sleep (23). The main benign childhood epilepsy with rolandic problem is that all of these patients could be paroxysmal discharges. Epilepsia 1973;14:381- helped by standard AED, but also that almost all 389 of them develop this exacerbation some time 10. Gibbs EL, Gillen HW, Gibbs PA. after having started AED therapy (24) and they Disappearance and migration of epileptic foci in would get better if drugs were discontinued (25). children'. Am J Dis Child 1954;88:596-603 11. Cavazzuti JB, Cappella L, Nalin A. Treatment of side effects Longitudinal study of epileptiform EEG patterns There is strong evidence that some AED cause in normal children. Epilepsia 1980;21:43-45 BECRS to worsen in some patients (26). Much 12. Bray PF, Wiser WC. Evidence for a genetic information on the potential harmful effects of etiology of temporal central abnormalities in focal AED on these patients has been collected. In epilepsy'.N Engl J Med 1964;271:926-933 particular has been blamed, but 13. Heijbel J, Bloom S, Rasmusson M. Benign (27), phenobarbital, phenitoin (28) and epilepsy of children with centrotemporal EEG new AED (29-31) could also be responsible. foci: a genetic study. Epilepsia 1975;16:285-293 Although it has sometimes been thought that 14. Scheffer IE, Jones L, Pozzebon M, Howell A, treatment of EEG paroxysms could provide Saling MM, Berkovic SF. Autosomal dominant some benefit in terms of the cognitive rolandic epilepsy and speech dyspraxia: a new capabilities of these children, evidence shows syndrome with anticipation. Ann Neurol that the opposite was true when AED were given 1995;38:533-642 (32). For that reason, when it is decided to 15. Neubauer BA, Fiedler B, Himmelein B et al. prescribe AED for BECRS, the patient must be Centrotemporal spikes in families with rolandic monitored very closely, looking for any epilepsy. Linkage to chromosome 15q14. intellectual deficiency that could signal a 1998;51:1608-1612 cognitive decline, which can usually be reversed 16. Vadlamudi L, Simon A, Connellan NM, Milne only by AED discontinuation. RL, Hooper JL, Scheffer IE, Berkovic SF. Is benign rolandic epilepsy genetically determined? References Ann Neurol 2004;56:129-32 1. Gastaut Y. 'Un élément déroutant de la 17. Santanelli P, Bureau M, Magaudda A, Gobbi semiologie électroencéphalographique: les G, Roger J. Benign partial epilepsy with pointes prérolandiques sans signification focale. centrotemporal (or rolandic) spikes and brain Rev Neurol 1952;87:488-490 lesion. Epilepsia 1989;30:182-188 2. Nayrac P, Beaussart M. Les pointes-ondes 18. Bouma PAD, Bovenkerk AC, Westendorp prérolandiques: Expression EEG très RGJ, Brouwer OF. The course of benign partial particulière: étude électroclinique de 21 cas. Rev epilepsy of childhood with centrotemporal Neurol 1958;99:201-220 spikes: a meta-analysis. Neurology 1997;48:430- 3. Beaussart M. Benign epilepsy of children with 437 rolandic (centrotemporal) paroxysmal foci: a 19. Ambrosetto G, Tassinari CA. Antiepileptic clinical entity. Study of 221 cases. Epilepsia drug treatment of benign childhood epilepsy with 1972;13:795-811 rolandic spikes: Is it necessary? . Epilepsia 4. Lombroso C. Sylvian seizures and 1990;31:802-805 midtemporal spike foci in children. Arch Neurol 20. Deonna T, Roulet E. Acquired epileptic 1967;17:52-59 aphasia (AEA): definition of the syndrome and 5. Heijbel J, Bloom S, Bergfors PG. Benign current problems. In: Beaumanoir A, Bureau M, epilepsy of children with centrotemporal EEG Deonna T, Mira L, Tassinari CA, edn. foci: a study of incidence rate in outpatient care. Continuous spikes and waves during slow sleep. Epilepsia 1975;16:657-664 Electrical status during slow sleep. London: John 6. Cavazzuti GB. Epidemiology of different types Libbey, 1955:37-45 of epilepsy in school age children in Modena, 21. Fejerman N, Di Blasi AM. Italy. Epilepsia 1980;21:57-62 of benign partial in children: report of 7. Lherman P, Kivity S. Benign focal epilepsy of two cases. Epilepsia 1987;28:351-355 childhood. A follow-up study of 100 recovered 22. Roulet E, Deonna T, Gaillard F, Peter-Favre patients. Arch Neurol 1975;32:261-264 C, Despland PA. Acquired aphasia, dementia 8. Loiseau P, Duche B, Cordova S, Dartighes and behavior disorder with epilepsy and JF, Cohadon S. Prognosis of benign childhood continuous spike and waves during sleep in a epilepsy with centrotemporal spike: a follow-up child. Epilepsia 1991;32:495-503 study of 168 patients. Epilepsia 1988;29:229-235 23. Dalla Bernardina B, Tassinari CA, Bureau M, Beghini B, Roger J. Epilepsie partielle et état de

Prats J.M. Benign Partial Epilepsy with Rolandic Spikes. Orphanet Encyclopedia. July 2004. http://www.orpha.net/data/patho/GB/uk-BECRS.pdf 3

mal électoencéphalographique pendant le Exacerbation of epileptic negative myoclonus by sommeil. Rev EEG Neurophysiol 1978;8:350- carbamazepine or phenobarbital in children with 353 atypical benign rolandic epilepsy. Epilepsia 24. Lherman P. Seizures induced or aggravated 1998;39(Suppl. 3):S2-S10 by . Epilepsia 1986;27:706-710 30. Elger ChE, Bauer J, Schermann J, Widman 25. Talwar D, Arora MS, Sher PH. EEG changes G. Aggravation of focal epileptic seizures by and seizure exacerbation in young children antiepilepic drugs. Epilepsia 1998;39(Suppl. treated with carbamazepine. Epilepsia 3):S15-S18 1994;35:1154-1159 31. Genton P, McMenamin J. Aggravation of 26. Caraballo R, Fontana E, Michelizza B, et al. seizures by antiepileptic drugs?. What to do in Carbamazepina, "abseza atipiche", "crise clinical practice' Epilepsia 1998; 39(Suppl. atoniche" e stato di PO continua del sonno 3):S26-S29 (POCS). Boll Lega It Epil 1989;66/67:379-381 32. Seidel WT, Mitchell WG. Cognitive and 27. Prats JM, Garaizar C, Garcia-Nieto L, Madoz behavioral effects of carbamazepine in children: P. Antiepileptic drugs and atypical evolution of data from benign rolandic epilepsy. J. Child idiopathic partial epilepsy. Pediatr Neurol Neurol. 1999;14:716-723 1998;18:402-406 28. Papazian O, Cañizales E, Alfonso I, Archila R, Duchowny M, Aicardi J. Reversible dementia and apparent brain atrophy during valproate therapy. Ann Neurol 1995;38:678-691 29. Guerrini R, Belmonte A, Strumia D, Hirsch E.

Prats J.M. Benign Partial Epilepsy with Rolandic Spikes. Orphanet Encyclopedia. July 2004. http://www.orpha.net/data/patho/GB/uk-BECRS.pdf 4