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Nerves and muscles

Neuronal ceroid lipofuscinosis

This is a group of inherited diseases in which cells cannot break down certain waste substances, so these build up in the nerve cells of the brain and eyes and gradually damage them. The disease is progressive, so over time changes in the dog's behaviour, sight and movement become more marked. Genetic tests exist for some of its forms.

Updated

2 breeds

What it is

Every cell has a recycling system that breaks down worn-out material. In neuronal ceroid lipofuscinosis an inherited fault in that system lets a fatty, waxy substance pile up inside the cells, and the nerve cells of the brain and of the retina at the back of the eye are hit hardest. As they stop working properly, the dog's sight, balance and behaviour slowly change.

The different forms of the disease begin at different ages, from young dogs to older adults, and progress at different speeds. Because the changes creep in gradually, at first they can be mistaken for shyness, a training problem or ordinary ageing.

Life with an affected dog means helping it feel safe as its world changes: keep the furniture where it is, speak before you touch it, and keep routines calm and predictable. A dog that sees and balances less well may need help on stairs and may startle more easily.

Signs you may notice

You may notice the dog behaving differently, becoming restless, fearful or irritable, seeing less well, especially in dim light, and moving clumsily or unsteadily. Seizures can appear as the disease advances.

When to see a vet

Book a visit when you notice lasting changes in your dog's behaviour, sight or balance. If it has a seizure, it needs a vet immediately.

This is general information, not veterinary advice. For your own dog's health, tests and treatment, see a vet.

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