Lafora disease is an inherited, progressive neurological disorder associated with myoclonic seizures, which can look like sudden involuntary jerks. It is particularly well recognized in miniature wirehaired dachshunds. Veterinary assessment and genetic testing can help establish a diagnosis; an online symptom list cannot determine whether a dog has it.
What causes Lafora disease?

The condition is associated with abnormal glycogen accumulation in cells and variants affecting the NHLRC1 gene, also known as EPM2B. It follows recessive inheritance: a dog must inherit two relevant altered copies to be genetically affected. A carrier may appear healthy while still passing a variant to offspring.
That is why apparently healthy parents do not, by themselves, rule out inherited risk. Genetic testing can identify the tested inherited change before signs appear. Discuss test suitability and interpretation with your veterinarian and the laboratory.
What signs might an owner notice?
Signs typically begin later in life rather than in early puppyhood. Sudden head or body jerks can occur spontaneously or in response to stimuli such as sounds or flashing light. Other neurological changes may develop as the disease progresses.
Do not deliberately expose the dog to a suspected trigger to see whether it reacts. Trembling, jerking, and seizures can have other causes, so new episodes need assessment even if the dog belongs to a breed associated with Lafora disease.
Preparing for a veterinary visit
Record when episodes began, how long they last, whether the dog remains responsive, and what happens afterward. Note medications, diet changes, possible toxin exposure, and any available family or genetic history. A video may help if it can be taken safely without delaying care or triggering an episode.
Your veterinarian may recommend a neurological assessment, testing for other causes, or referral. Routine blood tests or an MRI alone should not be presented as a definitive Lafora diagnosis. Ask what each proposed test can and cannot establish.
When a seizure is an emergency
Contact an emergency veterinary clinic immediately for a seizure lasting five minutes or more, repeated seizures within 24 hours, or another seizure before recovery. A first seizure also warrants veterinary assessment even if it stops quickly. Keep the dog away from stairs and other hazards, avoid putting your hands in its mouth, and do not administer unprescribed medication. If the dog already has a rescue-treatment plan, follow the clinician’s instructions.
Care after diagnosis
Management is individualized. Ask about medication, environmental changes, safe activity, and monitoring. Reducing known triggers may help day-to-day management, but it does not reverse the underlying disease. Do not assume sunglasses, antioxidants, a low-glycemic diet, or love and attention can prevent progression or guarantee a particular outcome.
Discuss any diet or supplement changes with the veterinary team, particularly when the dog takes medication. Keep a record of episodes, appetite, mobility, sleep, and enjoyable activities so treatment and quality-of-life decisions can be revisited with evidence.
Questions to take to the specialist
- What supports the diagnosis, and what alternatives remain?
- What does this genetic result mean for this dog and related dogs?
- Which changes at home are likely to be useful?
- What signs require an emergency visit?
- How will treatment response and quality of life be assessed?
For breeding decisions, use current genetic test results for the individual dogs and qualified advice about the proposed pairing. A healthy appearance or reports about other dogs cannot establish an individual dog’s genetic status.
Related guides
- Dachshund Leg Problems: Limping, Kneecaps, and Warning Signs
- How to Reduce Health Risks for Your Dachshund
- How to Care for a Dachshund: A Practical Health Checklist
- Dachshund Back Problems: IVDD Warning Signs and What to Do

