Alexander Bennett - A Statistical Inquiry Into the Nature and Treatment of Epilepsy

Frequency of Attacks. – Only a general average of the number of attacks can be made; and in the present series the following gives an idea of the frequency of seizures in different individuals.

This roughly indicates that, in the majority of cases, attacks of epilepsia gravior occur one or more times weekly or monthly. Under the last series, of attacks taking place at longer and more irregular intervals than a year, are included those cases where a few only have occurred during the lifetime of the patients.

Regularity of Attacks. – Many epileptics are attacked at regular intervals, sometimes on the same day or even hour; while others are afflicted at any time, day or night. The following indicate the proportion: —

Time of Attack. – The following particulars alone could be definitely ascertained: —

The chief feature of this observation is that in 15.5 per cent. of cases of E. Gravior the attacks always took place immediately after the patients had wakened in the morning, and this is probably due to the sudden alteration of the cerebral circulation from the sleeping to the wakeful state.

Symptoms immediately after the Attack. – The moment the attack is over sometimes the patient is in his usual condition, and feels no ill effects from the paroxysm. More commonly, however, he suffers from various symptoms, the chief of which, and their relative frequency, is as follows: —

The above conditions may last from an hour to several days.

Present condition, or state between the Attacks. – It is impossible to enter minutely into the actual physical and mental health of all the epileptic cases under notice, but the following statement gives a sketch of some of the more important conditions associated with the disease, and the frequency with which they occur. In the inter-paroxysmal state the condition of the patients were —

Of the 21.1 per cent. under the heading of special diseases, there were —

From these details it is evident that epilepsy is not of necessity associated with impairment of the physical or mental health. On the contrary, we find that in 17.7 per cent. of the patients there was apparently no flaw of any kind in their constitutions, which were absolutely normal, with the exception of the periodic seizures. In no less than 75.5 per cent. was the general health good, and in 66.6 per cent. the patients were robust and vigorous. At the same time the health was markedly impaired in 24.4 per cent., and the sufferers were of delicate or weak habit in 33.3 per cent. The main fact, however, to be observed is that, in the majority of cases of epilepsy, the general health and vigour of the patient is not deteriorated. In the same way, the intellectual capacities are not of necessity affected. In 74.4 per cent. the intelligence is recorded as not seriously impaired; and in 41.1 per cent. the memory as good. On the other hand, the mental faculties were markedly deficient in 25.5 per cent.; the patients were dull and slow in 31.1 per cent.; and in more than half, or 58.8 per cent., was there evidence of loss of memory. Another frequent symptom is repeated and constant headache, which, in the present series of cases, existed in 41.1 per cent.

This occurred altogether in 38 per cent. of the total number of cases. In these it occurred —

In all, the usual characteristics of the petit mal presented themselves; there being temporary loss of consciousness, sometimes with slight spasms, but without true convulsion, biting of the tongue, &c.

Frequency of Attacks. – The rough average frequency of attacks, as estimated in the cases under consideration, was as follows: —

Thus when epilepsia mitior exists, in the majority of cases the attacks are of daily occurrence.

Loss of consciousness , as ascertained in a series of cases, was

Premonitory Symptoms. – These are not, as a rule, so well marked in epilepsia mitior as in E. Gravior; but frequently the aura is quite as distinctly appreciated. In the 28 per cent. of cases in which E. Mitior is associated with E. Gravior, the aura was apparently the same in both. Of the 10 per cent. cases of E. Mitior occurring by itself, the following is the record: —

The number of cases in E. Mitior is too limited to warrant further generalization.

Bromide of potassium is generally recognised as the most effective anti-epileptic remedy we at present possess. There exists, however, great difference of opinion as to its method of administration and to the amount of benefit which we may expect from its use. Some physicians who employ the drug after one method come to totally different conclusions as to its efficacy from those who use another. Many believe the remedy to be only useful in certain forms of the disease, and to be very uncertain and imperfect in its action. Others, again, maintain that it is positively injurious to the general health of the patient. These and other unsettled points the following inquiry attempts to make clear.

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