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SeverePrevalence: Average breed risk

Epilepsy in Border Terriers

Epilepsy can occur in Border Terriers, though it is not among the most predisposed breeds. Seizures can result from genetic (idiopathic) epilepsy or secondary causes like toxin exposure, liver disease, or brain tumors. Any Border Terrier experiencing seizures deserves a thorough diagnostic workup to identify the underlying cause.

Prevalence

Average breed risk

Typical Onset

1-5 years for idiopathic epilepsy

Severity

Severe

Symptoms to Watch For

If your Border Terrier shows any of these signs, monitor closely and consult your veterinarian.

sudden collapse with rigid body and paddling limbs
loss of consciousness during episodes
drooling, urination, or defecation during seizure
disorientation and confusion after seizure (post-ictal phase)
episodes of staring blankly or snapping at air (focal seizures)
seizures occurring in clusters or increasing in frequency

Risk Factors

  • variable — may be genetic or acquired
  • head trauma history
  • toxin exposure (lead, insecticides, xylitol)
  • liver disease (hepatic encephalopathy)
  • brain tumor (more likely if onset is after age 5)

Diagnosis

Idiopathic epilepsy is a diagnosis of exclusion. Complete blood work, urinalysis, and bile acids rule out metabolic causes. MRI of the brain rules out structural lesions (tumors, inflammation, malformations). CSF analysis rules out infectious or inflammatory brain disease. Video of seizures helps classify type (generalized vs. focal). EEG is available at specialty centers.

Treatment

Anti-seizure medication is started when seizures occur more than once every 6-8 weeks, in clusters, or last over 5 minutes. Phenobarbital and levetiracetam (Keppra) are first-line. Potassium bromide is added for refractory cases. Zonisamide is an alternative. Regular blood level monitoring required. Emergency rectal diazepam at home for cluster seizures. Most dogs achieve good seizure control with medication.

Prevention

No prevention for genetic/idiopathic epilepsy. Minimize seizure triggers: consistent sleep schedule, reduce stress, avoid known triggers (flashing lights, overheating). Keep a seizure diary — date, time, duration, recovery time. Never abruptly stop anti-seizure medication.

When to See a Vet

EMERGENCY: seizure lasting more than 5 minutes (status epilepticus), seizures occurring in clusters (multiple in 24 hours), or first-ever seizure. Non-emergency: schedule evaluation within 1-2 weeks after a single brief seizure. Bring video of the event to your vet.

Other Health Conditions in Border Terriers

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