Epilepsy Seizure Detection Devices: Coverage and Choice

A seizure at night often goes unnoticed by the person having it, and that can be frightening for whoever sleeps beside you. Devices such as a wristband, an upper-arm sensor or a bed monitor aim to alert someone when a seizure starts, mainly a tonic-clonic one. Coverage is not automatic. In the UK, NHS access is decided locally, and funding may also come from social care or charities. In the US, it depends on your plan and often needs prior authorisation. While you work it out, you record seizures on paper or in the seizure diary in Sam. Its doctor report comes out as a PDF for your neurologist. This is general information, not medical or legal advice.

This text names devices only as examples, without a recommendation and in no order. Whether a device suits you is a decision for you and your neurologist. No device replaces medical care or an emergency call.

What kinds of seizure detection devices exist?

Epilepsy Action describes three main kinds: bed monitors that attach to the bed or lie on the mattress, video monitors, and wearables worn on the wrist or body. They pick up movement, heart rate and other signals such as oxygen levels.

Most seizure alarms are built to detect tonic-clonic seizures, because those involve movement and are easier to spot. Epilepsy Action says there is less evidence for devices that detect focal and absence seizures. Focal and absence seizures remain much harder to detect, and no device catches every event.

What can these devices do, and what can they not do?

A device can tell a nearby person that a seizure may have started. That is the honest core. Some wearables and bed monitors connect to a pager, a phone or a call centre, and alert someone who can check on you.

No device predicts a seizure in advance. Epilepsy organisations state that prediction is not yet possible. A device is an aid that supports care; it is not a finding, a diagnosis or a promise that nothing bad will happen. There are false alarms, and some events may be missed. A systematic review in the journal Seizure noted limits. No reviewed device could reliably detect some seizure types, such as focal seizures with retained awareness.

Which seizure detection devices are notable, and how do you place them?

A few systems appear in UK and US guides. The Embrace2 wristband, made by Empatica, is cleared by the US FDA for detecting patterns that may go with convulsive seizures. It works for adults and children from age six, and it can alert a caregiver. The maker says it does not predict seizures and is meant to speed up help when one starts. As of October 2026, Empatica lists Embrace2 as no longer available to buy, with support for existing subscriptions, and points new buyers to its newer EpiMonitor.

NightWatch+, made by LivAssured, is an upper-arm sensor used at night. The US version is cleared by the FDA for children aged four to sixteen. The maker reports clinical validation for nocturnal motor seizures, and Epilepsy Action lists it in its technology guide. Pay attention to what the maker actually claims, not to a headline.

General smartwatches are not validated seizure detectors. The Apple Watch has features such as fall and crash detection, but Apple does not market it as a seizure detection system. If someone suggests a general device, ask what evidence backs it for your seizure type.

How does coverage work in the UK: the NHS and self-funding?

There is no single rule for getting a device paid for in the UK. Epilepsy Action says local authority social care services may provide or fund monitors and alarms, charities may give grants, and VAT relief may apply when you buy one. Whether the NHS offers a device is decided locally, so ask your epilepsy team.

Epilepsy Action keeps a technology guide with devices and their listed costs, and notes that some video systems link to a monitoring centre for a subscription fee. Because this changes and differs by area, the practical step is to ask your neurologist or epilepsy nurse what applies to you. Local policies differ, so general guidance cannot promise a result.

How does coverage work in the US: insurance and FDA clearance?

In the US the picture also varies. Some devices are cleared by the FDA after a regulatory review. That clearance is separate from whether your insurance or Medicare will pay for one.

Whether a plan covers a device depends on your specific policy, and coverage often needs a prior authorisation. Coverage is not automatic. Contact your insurer to ask about coverage before you buy, and keep the answers, because plans and formularies change.

What to ask before you buy

A short set of questions helps a neutral conversation with your neurologist and with suppliers:

• For which seizure types and ages does the maker say the device works?
• Is it for the night only, or also during the day?
• Who receives the alert, and what if no one answers?
• How far does the base station reach?
• How long does the battery last, and how long to charge?
• Is the performance a maker's claim or the result of a study?
• Can you try the device before you commit?

Trying a wearable yourself, where the supplier allows it, matters, because comfort and fit decide whether you will actually use it.

A device is an aid, not a replacement

No device replaces medical care. Keep your neurologist in the loop before you rely on one, because the right response to an alert depends on your seizure type and history. A device also does not replace calling for help. If a seizure lasts five minutes or longer, or repeats, whoever is present should call the emergency number without delay (112 in the EU, 999 in the UK, 911 in the US).

What counts as urgent for you belongs in a plan you agree with your neurologist. This text is not a medical assessment and never replaces one.

Keep a useful record for your neurologist

Wherever the funding question lands, a clear record of your seizures supports the conversation. Epilepsy organisations note that many seizures are not remembered by the person who has them, so a note from someone who was present is valuable. Mark who saw each event.

For each night or event, record the date and time, whether a seizure happened, what the observer saw, what happened afterwards, and sleep and medicine that day. Also note nights with no event, so the pattern becomes visible. Sam logs your own seizures with date, time and type, and your neurologist's letters can sit in the Health Vault in the same app. See our first-weeks guide after an epilepsy diagnosis and how sleep, Apple Health and triggers come together. A daily-life view of epilepsy and sleep routines and a seizure record for a doctor visit round it out.

Log your seizures in Sam and take the report to your neurologist

Your neurologist reads a timeline instead of estimates from memory. The epilepsy program is a diary with a doctor report and a monthly questionnaire. It starts once you confirm a doctor has made the diagnosis.

• Instead of memory: each seizure is an entry with date, time and type, and sleep and resting heart rate from Apple Health sit beside today's entries when a value exists.
• Instead of paper: the doctor report summarises 1, 3, 6 or 12 months, or the whole record, as a PDF you can print or show.
• Instead of loose letters: documents and correspondence sit in the Health Vault in one place.

Sam does not detect seizures, raises no alarm for them and replaces neither a device nor your neurologist.

Try Sam Health

Sam is a wellness companion, not a medical device. The app does not diagnose, treat, cure or prevent any condition or health state. Always consult qualified professionals for medical decisions.

General information, not medical or legal advice. Coverage rules, funding and prices change, and your NHS area, local authority or plan may differ. Ask your neurologist, insurer or local authority about your own case.

Related reading

• Epilepsy new diagnosis: your first weeks
• Living with epilepsy: sleep routine and daily life
• Sleep, epilepsy and Apple Health triggers
• Seizure record for a doctor visit
• Flying with Epilepsy: Preparation and Medication

Sources

Updated: October 2026

• Epilepsy Action: Wearable epilepsy devices, Alarms and monitors and NightWatch+ guide entry (updated 2026)
• Epilepsy Foundation (US): FDA-cleared seizure alerting device and Empatica Embrace device wiki
• Empatica: Embrace2 and EpiMonitor product information
• LivAssured: NightWatch+ (US) and scientific evidence
• Seizure (Kurada et al.): Seizure detection devices for use in antiseizure medication clinical trials (systematic review, 2019)