Sleep deprivation, stress, missed medication and more. Understanding your personal triggers can reduce seizure frequency. Here's how a seizure diary reveals patterns you'd never spot otherwise.
One of the most empowering things a person with epilepsy or a seizure condition can do is identify their personal triggers. Not everyone has identifiable triggers — some seizures happen without any obvious cause — but many people find that certain factors reliably increase their seizure risk. Understanding yours can help you manage them, and the only reliable way to identify them is through consistent logging over time.
Lack of sleep is one of the most widely reported seizure triggers. Even a single night of poor sleep can significantly lower the seizure threshold for many people. This includes not just total hours of sleep, but disrupted sleep, changed sleep schedules (like shift work or travel across time zones), and broken sleep due to care responsibilities.
If you're logging consistently, you'll start to see whether your seizure frequency rises after poor nights — and that insight alone can change how seriously you take sleep hygiene.
For people taking anti-epileptic drugs (AEDs), taking medication late or missing a dose can significantly raise seizure risk. The blood levels of AEDs need to remain consistent to be effective — even a few hours' variation can make a difference for some people. Log the time of seizures alongside your notes about medication, and patterns often emerge.
Psychological stress is frequently cited as a trigger. The physiological effects of stress — elevated cortisol, disrupted sleep, altered breathing patterns — can all lower the seizure threshold. This is particularly relevant for people with NEAD, where stress is often a central factor, but also applies to epilepsy.
Alcohol can trigger seizures both directly and through the rebound effect as it leaves the system. The hangover period — when blood alcohol is falling — is often higher risk than drinking itself. Alcohol also disrupts sleep quality, compounding the sleep deprivation effect.
Being unwell — particularly with a fever — increases seizure risk. The same is true of infections that affect body temperature or hydration. Some AEDs are also affected by illnesses that cause vomiting, as they may not be properly absorbed.
For women with epilepsy, seizure frequency can vary significantly across the menstrual cycle — a pattern called catamenial epilepsy. Hormonal fluctuations around ovulation and menstruation can lower the seizure threshold. This is one of the most important things to track over time, as it can inform conversations with your neurologist about medication timing or dosage adjustments.
About 3% of people with epilepsy are photosensitive — meaning flashing or flickering lights can trigger seizures. Common triggers include TV screens, video games, strobe lighting, and sunlight flickering through trees or railings. If photosensitivity is suspected, an EEG with photic stimulation can test for it.
For some people, particularly those with Dravet syndrome, becoming overheated is a significant trigger. Hot baths, fever, exercise in warm conditions, or even hot weather can raise seizure risk. Logging activity (exercising, travelling) alongside temperature conditions in the notes field can help identify this pattern.
The key word is personal. Triggers vary enormously between individuals — what affects one person may have no effect on another. This is why general lists of triggers are only a starting point; your own log is the data that matters.
After two or three months of consistent logging, look for patterns:
Your neurologist can help interpret patterns you spot — but they need the data. Arriving at an appointment with three months of logged data is a completely different conversation from trying to recall patterns from memory.
"I'd been telling my neurologist for years that I thought my seizures were related to my period. When I showed her four months of logged data, it was undeniable — and my medication schedule was adjusted the same appointment."
Identifying a trigger is only useful if you can act on it. Some triggers are modifiable — you can improve sleep hygiene, reduce alcohol, manage stress differently. Others aren't modifiable but can inform treatment decisions. A pattern of catamenial seizures might lead to a medication review; a pattern around missed doses might prompt a reminder system.
The goal isn't to live a restricted life in constant avoidance of triggers. It's to understand your condition well enough to make informed choices — and to have the data that helps your medical team help you.
Tip: Use the notes field in Seizure Tracker to record how you slept the night before, your stress level, and any other contextual notes. Over time, this turns into a rich dataset that goes far beyond a simple count of seizures.
One-tap logging, automatic timestamps, PDF reports for your GP, and shared access for family and carers — all in one place.
Get Seizure Tracker →