. Epilepsy, a study of the idiopathic disease. ereditary influence tends to be less obvious, for the reasonsgiven on an earlier page. It cannot, however, be said that thehereditary influence in late epilepsy is entirely in abeyance;and as the majority of the cases of late epilepsy show evidenceof atheromatous, or arterio-sclerotic changes, it is most likelythat the latter condition acts as a determining cause in thosewho are hereditarily predisposed to the disease. The clinical features of late epilepsy may be thus occurs both as the major and the minor type of the disease,but the


. Epilepsy, a study of the idiopathic disease. ereditary influence tends to be less obvious, for the reasonsgiven on an earlier page. It cannot, however, be said that thehereditary influence in late epilepsy is entirely in abeyance;and as the majority of the cases of late epilepsy show evidenceof atheromatous, or arterio-sclerotic changes, it is most likelythat the latter condition acts as a determining cause in thosewho are hereditarily predisposed to the disease. The clinical features of late epilepsy may be thus occurs both as the major and the minor type of the disease,but the attacks are less severe and less frequent than those seenin the earlier years of life. The existence of mental failure isless common, and, when it occurs, is less pronounced than inthe epilepsies commencing under twenty years of age. StigmataiPick, Wim. Med. Wochensch., 1899, nr. .30. CHART 8 A Severe Case of Serial Epilepsy, with small Intervening Periods OF the Status Epilepticus. JAN. FEB. MAR. APRIL MAY JUNE JULY AUG. SEP. OCT. NOV. To Face page 10 Sdin ONSET 109 of degeneration are only rarely observed. In character thistype of epilepsy may be described as yielding satisfactorilyto treatment, the number of cases which become confirmedepileptics being relatively small compared with those whichshow considerable improvement, or even arrest of the fits(Table ;^2). THE ONSET, COUESE, AND TEEMINATION OF EPILEPSY. Onset. Epilepsy commences in a variety of ways. First,by the development of the minor, or petit mal type, whichmay rmi a course of months or years, before the onset ofconvulsive seizures. This is a mode of onset accompaniedby difficulty and delay in diagnosis, as the significance of theminor attacks may be entirely unrecognised, until a major fitestablishes the true nature of the malady. Secondly, by the development of the grand mal, or majortype, with frequently recurring seizures and the establishmentof the confirmed disease. Thirdly, by the rec


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