Is idiopathic epilepsy in dogs hereditary?

Certain breeds have a higher predisposition, and there is evidence of familial inheritance, though the genetic mechanisms are complex. If you are concerned, speak with your vet or a genetics counsellor about breed-specific risks and testing options.

What should I do to keep my dog safe during a seizure?

Stay calm, remove nearby sharp or dangerous objects, and record a video noting the time and details of the seizure. Do not put your hands in your dog's mouth. Seek veterinary advice as soon as the seizure ends.

What tests does the vet typically run?

The vet will typically start with a physical and neurological examination plus blood biochemistry and urinalysis to rule out metabolic or organ-related causes. Advanced imaging such as CT or MRI and an electroencephalogram (EEG) may be arranged if needed.

What follow-up care is needed after starting treatment?

Treatment focuses on seizure control. You will need to maintain a seizure diary, attend regular blood checks to monitor for medication side effects, and discuss diet, weight management, and follow-up frequency with your vet to fine-tune the treatment plan.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Epilepsy in Dogs: Seizure Symptoms, Diagnosis & Treatment Guide [2025]

Canine idiopathic epilepsy typically appears between 1–5 years of age, characterised by recurrent seizures. A diagnosis is made by ruling out other causes, and lifelong medication is usually required. Most dogs achieve good seizure control.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

PetHealthMap Editorial Team

Sources: ACVIM, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•A single seizure lasting more than five minutes
•Multiple seizures in a short period with no recovery between episodes
•Unresponsive or severely disoriented for a prolonged period after a seizure

Schedule a Clinic Visit Soon (within 24–72 hours)

•A seizure that resolved but recurred within the same day
•Persistent lethargy and noticeably reduced activity following a seizure
•A significant and sustained change in water intake or appetite in recent days

01What Symptoms Indicate a Problem?

Seizures can range from dramatic convulsions to subtle vacant episodes, and are often followed by weakness, lethargy, or brief behavioural changes. Changes in thirst and appetite should also be monitored. Early neurological evaluation is recommended.

Generalised or focal seizures, limb stiffness, and loss of voluntary muscle control
Unusual behaviour, vacant staring, or a trance-like state before or during a seizure
Post-ictal weakness, lethargy, temporary disorientation, or reluctance to move after a seizure
Increased water intake or changes in appetite, which may indicate a concurrent or contributing condition
If epilepsy is suspected, arrange a neurology consultation promptly

Seek emergency care immediately if you notice the following symptoms:

⚠️ A single seizure lasting more than five minutes (status epilepticus)
⚠️ Multiple seizures occurring in quick succession (cluster seizures)
⚠️ Prolonged unresponsiveness or severe disorientation after a seizure

02How to Assess at Home: Observation Tips and Emergency Criteria

Recording key observations at home helps the vet identify seizure patterns and potential triggers. Keep videos and timestamps wherever possible.

Note the exact start and end time of every seizure (accurate to the minute)
Record a video on your phone, capturing the period before, during, and after the seizure
Track daily water intake, appetite, and body weight changes for comparison
Observe and note changes in alertness and gait before and after each episode
Compile a list of current medications, supplements, and medical history to bring to the appointment

03How Will the Vet Diagnose the Condition? Common Diagnostic Tests

Diagnosis begins with a physical and neurological examination, followed by blood, urine, and imaging tests to rule out treatable metabolic or organ-based causes. An EEG or specialist imaging may be arranged when indicated.

Physical and neurological examination

assessing reflexes, consciousness, and focal neurological deficits

Blood and biochemistry panel

ruling out hypoglycaemia, hepatic or renal insufficiency, and other metabolic abnormalities

Urinalysis

evaluating kidney function and screening for toxicological or metabolic markers

Advanced imaging (CT or MRI)

ruling out structural brain lesions or tumours

Electroencephalogram (EEG) or specialist neurology referral when further evaluation is needed

04Treatment and Ongoing Care: Medication, Diet, and Management Guide

The treatment goal is to reduce seizure frequency while monitoring for medication side effects. Long-term follow-up, regular bloodwork, and a seizure diary are usually required; specialist referral is recommended when control is difficult.

Assess whether to start long-term antiepileptic medication based on seizure frequency and severity
Maintain a seizure diary recording frequency, potential triggers, and duration
Discuss the feasibility of dietary modifications and weight management with your vet
Attend regular follow-up appointments to monitor bloodwork and potential medication side effects
Seek referral to a hospital with neurology specialist services if seizure control remains difficult

05What to Prepare Before the Vet Visit: Helping the Vet Identify the Cause Quickly

Bring a video of the seizure, ideally showing the period before, during, and after the episode

Record the time, frequency, and duration of each seizure

Note the activity context and any suspected triggers at the time of each seizure (e.g. medication changes or environmental factors)

Bring a list of all current medications, supplements, and known allergies

Bring any previous test results or imaging reports to the appointment

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.