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Hereditary Factors in Partial Epilepsy

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SUMMARYIn an effort to characterize the hereditary factors in the non‐generalized epilepsies, a study was made of 51 cases of partial epileptic seizures occurring in subjects whose family included at least one other epileptic. It was possible to classify these cases into five groups, viz.: A group of 15 cases characterized by mid‐childhood epilepsy with usually focal motor attacks and rolandic paroxysms in the EEC The convulsions were usually homochronous and homotypical, but this was not a constant feature. These epilepsies were not truly partial: it was only because they occurred at a certain age that they produced a focal symptomatology. A group of 13 cases characterized by psychomotor attacks or unilateral clonic spasms, which occurred or started in childhood and were preceded by febrile convulsions. The predisposition in these cases concerned the febrile convulsions, and these caused the lesions which determined the focal character of subsequent seizures. The third group of 10 cases was characterized by a hereditary brain disease, of which the seizures were symptomatic. Their focal character was probably due to multiple cerebral lesions in these patients. In the fourth group of 8 cases the features of a familial focal epilepsy were more prominent; but even in these cases hereditary transmission of the partial character of the seizures was not clearly demonstrated. The fifth group of 7 cases was very heterogeneous, and while the familial nature of the seizures seemed indisputable, these seizures were sometimes partial and at other times général ized, thus posing problems yet to be solved. These findings invite the conclusion that hereditary partial epilepsy does not exist.RÉSUMÉLes auteurs ont étudie 51 cas de crises épileptiques d'expression partielle survenues chez des sujets comptant au moins un autre épileptique dans leur famille en vue d'essayer de repondre à la question: comment peut‐on caracteriser les facteurs hereditaires dans les epilepsies non généralisées. Ces cas ont pu etre classes en 4 groupes: Premier groupe (15 cas):il s'agit d'une épilepsie de la moyenne enfance donnant des crises le plus souvent focales motrices avec, a 1'E.E.G., des paroxysmes rolan‐diques. II existe en général une homochronie et une homotypie des crises, mais ce n'est pas constant. II ne s'agit pas d'epilepsies partielles veritables: c'est parce que les crises surviennent a un age donne qu'elles ont une symptomatologie focale. Deuxiéme groupe (13 cas):ce sont des crises psychomotrices ou hémicloniques survenant ou débutant dans l'enfance, précédées de convulsions fébriles. La predisposition porte sur les convulsions febriles, et cellesci entrainent des lesions responsables du caractere focal des crises observées par la suite. Troisième groupe (10 cas). II existe une maladie cérébrale, héréditaire, les crises n'en constituent qu'un symptome, leur caractere focal est peut‐etre du au hasard des lesions cerebrales multiples de ces patients. Quatrième groupe (8 cas). La notion d'une épilepsie focale familiale parait plus nette, mais meme dans ces cas la transmission hereditaire du caractere partiel des crises ne parait pas clairement demontree. Cinquiéme groupe (7 cas). II est très hétérogene, et si le caractere familial des crises parait indiscutable, ces crises sont tantot partielles tantot général isees ce qui pose des problemes actuellement insolubles. II est tentant de conclure que les épilepsies partielles héréditaires n'existent pas.
Title: Hereditary Factors in Partial Epilepsy
Description:
SUMMARYIn an effort to characterize the hereditary factors in the non‐generalized epilepsies, a study was made of 51 cases of partial epileptic seizures occurring in subjects whose family included at least one other epileptic.
It was possible to classify these cases into five groups, viz.
: A group of 15 cases characterized by mid‐childhood epilepsy with usually focal motor attacks and rolandic paroxysms in the EEC The convulsions were usually homochronous and homotypical, but this was not a constant feature.
These epilepsies were not truly partial: it was only because they occurred at a certain age that they produced a focal symptomatology.
A group of 13 cases characterized by psychomotor attacks or unilateral clonic spasms, which occurred or started in childhood and were preceded by febrile convulsions.
The predisposition in these cases concerned the febrile convulsions, and these caused the lesions which determined the focal character of subsequent seizures.
The third group of 10 cases was characterized by a hereditary brain disease, of which the seizures were symptomatic.
Their focal character was probably due to multiple cerebral lesions in these patients.
In the fourth group of 8 cases the features of a familial focal epilepsy were more prominent; but even in these cases hereditary transmission of the partial character of the seizures was not clearly demonstrated.
The fifth group of 7 cases was very heterogeneous, and while the familial nature of the seizures seemed indisputable, these seizures were sometimes partial and at other times général ized, thus posing problems yet to be solved.
These findings invite the conclusion that hereditary partial epilepsy does not exist.
RÉSUMÉLes auteurs ont étudie 51 cas de crises épileptiques d'expression partielle survenues chez des sujets comptant au moins un autre épileptique dans leur famille en vue d'essayer de repondre à la question: comment peut‐on caracteriser les facteurs hereditaires dans les epilepsies non généralisées.
Ces cas ont pu etre classes en 4 groupes: Premier groupe (15 cas):il s'agit d'une épilepsie de la moyenne enfance donnant des crises le plus souvent focales motrices avec, a 1'E.
E.
G.
, des paroxysmes rolan‐diques.
II existe en général une homochronie et une homotypie des crises, mais ce n'est pas constant.
II ne s'agit pas d'epilepsies partielles veritables: c'est parce que les crises surviennent a un age donne qu'elles ont une symptomatologie focale.
Deuxiéme groupe (13 cas):ce sont des crises psychomotrices ou hémicloniques survenant ou débutant dans l'enfance, précédées de convulsions fébriles.
La predisposition porte sur les convulsions febriles, et cellesci entrainent des lesions responsables du caractere focal des crises observées par la suite.
Troisième groupe (10 cas).
II existe une maladie cérébrale, héréditaire, les crises n'en constituent qu'un symptome, leur caractere focal est peut‐etre du au hasard des lesions cerebrales multiples de ces patients.
Quatrième groupe (8 cas).
La notion d'une épilepsie focale familiale parait plus nette, mais meme dans ces cas la transmission hereditaire du caractere partiel des crises ne parait pas clairement demontree.
Cinquiéme groupe (7 cas).
II est très hétérogene, et si le caractere familial des crises parait indiscutable, ces crises sont tantot partielles tantot général isees ce qui pose des problemes actuellement insolubles.
II est tentant de conclure que les épilepsies partielles héréditaires n'existent pas.

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