This study estimates the 1-year prevalence of migraine in adults in England in relation to the major demographic variables of age, gender and ethnicity, and describes some of its features, including aspects of consequential disability. A telephone survey was conducted of a random sample (n = 4007) of the population aged 16-65 years of mainland England using a previously validated diagnostic interview. The response rate was 76.5%. Overall, 7.6% of males and 18.3% of females reported migraine with or without aura within the last year meeting diagnostic criteria closely approximate to those of the International Headache Society. Prevalence of migraine varied with age, rising through early adult life and declining in the late 40s and early 50s. Prevalence was higher in Caucasians than in other races. Attack rates were > or = 1/month in most migraineurs, and most experienced interference with daily activities in > or = 50% of their attacks. On average, an estimated 5.7 working days were lost per year for every working or student migraineur, although the most disabled 10% accounted for 85% of the total. Results were in keeping with those from surveys in other countries. If these findings in mainland England are projected to the entire UK population, we estimate that 5.85 million people aged 16-65 years experience 190 000 migraine attacks every day and lose 25 million days from work or school each year because of them. Migraine is an important public health problem in the UK, associated with very substantial costs.

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The headache associated with medication overuse is variable and often has a peculiar pattern with characteristics shifting, even within the same day, from migraine-like to those of tension-type headache.

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The study demonstrated a high prevalence of migraine and a very high prevalence of headache on  ≥15 days/month, and revealed unmet health-care needs of people with headache in Russia.

Summary: Purpose: Lamotrigine is an effective add-on therapy against a range of epileptic seizure types. Comparative studies with carbainaLepine (CBZ) as monotherapy in newly diagnosed epilepsy suggest similar efficacy. In this study, lamotrigine (LTG) and phenytoin (PHT) are compared.Methods: In a double-blind parallel-groups study. I X 1 patients with newly diagnosed untreated partial seizures or secondarily or primary generalised tonic-clonic seizures were randoniised to two treatment groups. One group (n = 86) received LTG titrated over 6 weeks from a starting dose of 100 mg/day. The other (ti = 95) received PHT titrated from 200 ing/tlay. Treatment continued for 5 4 8 weeks. K i~s i d t x ;The percentages of patients remaining on each treatment and seiLure frec during the last 24 and 40 weeks of the study, and times to first seizure after the first 6 weeks of treatment (dose-titration period). did not differ significantly between the treatment groups. These were measures of efficacy. Time to discontinuation, a composite index of effi safety, likewise did not distinguish between treatments. Adverse events led to discontinuation of 13 (IS%) patients from LTG and 18 ( 1 9%) from PHT. The adverse-event profile for LTG w.as dominated by skin rash (discontinuation of 10 (11.6%) patients compared with five (5.3%) from PHT] rather than central nervous system side effect sthenia, somnolence, and ataxia were each significantly inore frequent in the PHT group. The high rate of rash with LTG was probably due to the high starting dose and may be avoidable. A quality-of-life instrument. the SEALS inventory, favoured LTG. Patients taking PHT showed the biochemical changes expected of an eiizyrneinducing drug, whereas those taking LTG did not.Cotwlusiot~.~: LTG and PHT monotherapy were similarly effective against these seizure types in patients with newly diagnosed epilepsy. LTG was better tolerated, inore frequently causing rash. but with a lower incidence of central nervous system side effects.

Lamotrigine blocks voltage-sensitive sodium channels, leading to inhibition of neuronal release of glutamate. Release of glutamate may be essential in the propagation of spreading cortical depression, which some believe is central to the genesis of migraine attacks. This study compared safety and efficacy of lamotrigine and placebo in migraine prophylaxis in a double-blind randomized parallel-groups trial. A total of 110 patients entered; after a 1-month placebo run-in period, placebo-responders and non-compliers were excluded, leaving 77 to be treated with lamotrigine (n = 37) or placebo (n = 40) for up to 3 months. Initially, lamotrigine therapy was commenced at the full dose of 200 mg/day, but, following a high incidence of skin rashes, a slow dose-escalation was introduced: 25 mg/day for 2 weeks, 50 mg/day for 2 weeks, then 200 mg/day. Attack rates were reduced from baseline means of 3.6 per month on lamotrigine and 4.4 on placebo to 3.2 and 3.0 respectively during the last month of treatment. Improvements were greater on placebo and these changes, not statistically significant, indicate that lamotrigine is ineffective for migraine prophylaxis. There were more adverse events on lamotrigine than on placebo, most commonly rash. With slow dose-escalation their frequency was reduced and the rate of withdrawal for adverse events was similar in both treatment groups.

Lithium is widely used in the prophylaxis of episodic cluster headache without formal evidence of efficacy. Placebo-controlled clinical trials are not easy in conditions characterized by frequent severe pain. In this study, it was assumed that lithium would work quickly if at all, and placebo response would be zero. Strict diagnostic criteria excluded uncertain or atypical cases. Patients were male in so-far untreated episodes expected to last for at least 3 weeks more. In a double-blind, placebo-controlled comparison of matched parallel groups, treatment was either slow-release lithium carbonate, 800 mg/day, or placebo. After 7 days, compliance was estimated by tablet count, blood was taken for lithium assay, efficacy was assessed (attacks stopped or substantially improved) and adverse reactions were recorded. The study was stopped after planned sequential analysis of the 27th patient (13 on lithium, 14 on placebo). Estimated compliance was usually but not always good. Plasma lithium levels were mostly in the range 0.5-0.6 mmol/l on lithium, zero on placebo. Cessation of attacks within 1 week occurred in two patients in each group, substantial improvement in 6/14 (43%) on placebo, 8/13 (62%; NS) on lithium. Only minor adverse events were reported. Lithium treatment was therefore associated with a useful subjective improvement rate but the assumptions made at outset had proved wrong. The trial was stopped because superiority over placebo could not be demonstrated. There were lessons for future trials.