Seizure alarms: what they detect and who they help for older adults

Later-life checks before you choose

For an older adult, the practical test is whether the device fits hearing, vision, memory, and the daily routine. A system that is hard to wear, hard to charge, or confusing to use is unlikely to be ready when it is needed.

A seizure alarm is not a treatment or a diagnosis. Ask the clinician what needs monitoring and how the alert fits the wider care plan before relying on it.

Involve the person who will use the alarm in the decision. If memory or mobility has changed recently, review the plan with a clinician, care professional, or local service rather than relying on a device alone.

• Check whether the button is easy to see, feel, and press.
• Ask how the device reminds the user to charge it.
• Confirm what the responder does if the user cannot speak or hear.
• Review the plan after a hospital stay or a change in medication.
• Keep a written contact and medical-information list with the monitoring centre.

How seizure alarms differ from general alarms

A general personal alarm waits for the wearer to press a button. A seizure alarm tries to detect a pattern of movement, such as repetitive jerking or a change in position in bed, and raises an alert without a button press. Some systems combine a wearable sensor with a bed sensor.

This can help when a person cannot press a button during a seizure, but the technology is not a diagnosis. It identifies a movement pattern that may be associated with a seizure. The response still depends on the monitoring centre, family contacts, and the care plan.

In later life, a guide like this is most useful when it is read alongside the person's own routine and care arrangements. A device or feature that sounds reassuring on paper can add work if it is difficult to charge, uncomfortable to wear, or unclear to the people responding.

• Wearable sensors may detect repetitive movement or a sudden change in posture.
• Bed sensors may detect unusual movement or a person leaving the bed.
• Some systems use both a wearable and a bed sensor.
• The alert must reach someone who knows what to do.

What the alarm can and cannot detect

Seizure alarms are designed for specific seizure patterns, often tonic-clonic seizures or nighttime convulsions. They are less reliable for seizures without prominent movement, such as some focal seizures, absence seizures, or seizures where the person remains still. A device may also miss a seizure if it is not worn correctly or the battery is low.

False alerts can occur with other repetitive movements, such as scratching, tooth brushing, or bed partner movement. Ask the provider how the device is tuned and whether the sensitivity can be adjusted. A high false-alert rate can lead to alert fatigue, which is a safety risk in itself.

Families often revisit these decisions after a hospital stay, a change in medication, or a move. Write down what changed, who needs to know, and whether the current response plan still matches the person's needs. The alarm should support that review rather than replace it.

Who may benefit

A seizure alarm may be considered when someone has seizures that could lead to injury, especially at night, and when they cannot reliably call for help during or after a seizure. It may also help families who need to know when a seizure has occurred so they can provide support.

It is less useful if seizures are well controlled, if the person can summon help, or if the response would not change. The decision should involve the person, their family or carers, and the epilepsy team. Ask whether the alarm fits the seizure type and the care plan.

Older adults are not a single group. Mobility, memory, dexterity, hearing, and confidence all affect whether a feature is helpful. Choose the simplest setup that covers the main risk, then add complexity only when there is a clear reason.

Build a response plan

Write down what should happen when an alert is received. Who will check on the person? When should an ambulance be called? What information should be given to emergency services? The plan should reflect the person's seizure history and the advice of their clinician.

Include practical details such as the address, access instructions, known triggers, medication, and emergency contacts. If the person lives alone, agree who will hold a key and how a welfare check will be carried out. Review the plan after every seizure that triggers an alert.

For someone who values independence, the conversation should start with what they want to keep doing. A discreet format, a familiar responder, and a short daily check can feel more acceptable than a system that draws attention to frailty.

• Who receives the alert first, and who is the backup?
• When should the responder call 999?
• What seizure information should be shared with the ambulance service?
• How will the person be checked on if they do not respond?
• When will the plan be reviewed with the epilepsy team?

Questions to ask before buying

Ask which seizure patterns the device is designed to detect and how it performs for the person's seizure type. Confirm whether it works at night, in bed, and outside the home. Check the battery life, charging routine, and mobile or broadband coverage at the address.

Ask about the monitoring plan, the escalation process, and the cost of the device and any subscription. Confirm the returns policy and whether the device can be tested. If the provider cannot explain the limitations clearly, look for an alternative or ask the epilepsy team for advice.

• Which seizure types is the device intended to detect?
• Does it work in bed and during sleep?
• What is the false-alert rate and how is it handled?
• Is monitoring included, or does it call family contacts?
• What happens during a power cut or loss of connection?
• Can the device be trialled before committing to a contract?

Questions people ask

Sources and further reading

These sources were used to check the general guidance in this guide. They do not imply endorsement of any product.

• Epilepsy Action — Seizure alarms
• NHS — Epilepsy
• SUDEP Action — Safety
• Epilepsy Foundation — Seizure detection devices