Avoiding factors that precipitate seizures can be very important. The common factors are listed in Table 1.32 (p. 54). Excess alcohol intake (or its abrupt withdrawal) was a predominant factor in 6% of first seizures in one UK series, and accounted for 27% of first seizures in those between the ages of 30 and 39 years. Sleep deprivation may also be a precipitating factor for seizures in susceptible individuals, and is often a contributory factor in those abusing alcohol. Photosensitivity is encountered mainly in adolescents with idiopathic generalized epilepsy, and is described on p. 56.
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