Wobbly hedgehog syndrome (WHS) is a fatal, progressive spongy myelinopathy of unknown etiology, and management is entirely supportive — no treatment has been shown to alter disease course or survival.

The etiology remains unconfirmed. Genetic, nutritional, and autoimmune causes have all been proposed.Journal of the… The consistent finding of inbreeding in captive US populations — a consequence of limited breeding stock following the 1991 import ban — is a suspected contributing factor, and WHS has never been reported in wild African pygmy hedgehogs.Journal of the… A viral cause has also been implicated: pneumonia virus of mice (PVM) was detected in one hedgehog with WHS-consistent white matter vacuolization, with 96.5% full genomic sequence homology to PVM strain 15, and PVM antigen was confirmed immunohistochemically in both brain and lung tissue of that animal.Veterinary Micr… Histopathologically, WHS is characterized by bilateral, symmetrical status spongiosus of CNS white matter with myelin degeneration, axonal degeneration, reactive microgliosis, and mild astrocytosis — lesions most severe in the cerebellum, medulla oblongata, and cervical and thoracic spinal cord.Veterinary Path… Ultrastructurally, the primary event is splitting of the myelin sheath at the intraperiod line with subsequent focal expansion, disruption, dilatation, and phagocytosis.Veterinary Path…

The clinical presentation is a progressive ascending paralysis. Early signs include gait abnormalities and proprioceptive deficits; late signs include ascending paralysis, self-mutilation, head tilt, circling, dysphagia, weight loss, and tremors.Journal of the… Disease typically affects animals under 2 years of age.Journal of the… Histopathologically confirmed prevalence in one referral population was 3.32%; earlier owner-survey data reported progressive paralysis in approximately 10% of companion hedgehogs.Journal of the…

Definitive diagnosis requires postmortem histopathology. Antemortem diagnosis is presumptive, based on compatible clinical signs after ruling out differentials. The critical differentials are primary CNS neoplasia (astrocytoma, meningioma, histiocytic sarcoma), intervertebral disc disease, trauma, and infectious or toxic processes.Journal of the…+2 Concurrent neoplasia is documented — WHS and disseminated histiocytic sarcoma with lateral ventricular meningioma have been confirmed in the same individual, and concurrent neoplasia shortened the clinical course in that case.Journal of Vete… An astrocytoma at the cervicomedullary junction produced a clinical picture indistinguishable from WHS antemortem, with death 22 days after onset.Journal of Vete… Torpor and severe systemic illness can also mimic neurologic disease and must be excluded on initial examination.Journal of the…

Management is analgesic and supportive care. No treatment strategy has been proven effective, and prognosis is grave.Journal of the…+1 The time from onset of clinical signs to death is short.Journal of the… Euthanasia is a primary consideration once progressive paralysis is established, given the fatal trajectory and absence of disease-modifying therapy.Journal of the… Chemical restraint is required for thorough physical and neurologic examination, as most hedgehogs adopt a defensive posture that precludes assessment without sedation.MSD Vet Manuals

Would you like guidance on how to perform and interpret the neurologic examination in hedgehogs to help localize the lesion antemortem?