Connect
PetConnect
Cortex
Clinical Evaluation of Nervous System Abnormalities
This article provides a systematic approach to identifying, localizing, and diagnosing clinical manifestations of nervous system dysfunction in small and large animals. It emphasizes the importance of a structured neuroanatomical examination to establish accurate differential diagnoses.
Clinical summary
- Clinical signs
- Common clinical signs include ataxia, paresis/paralysis, altered mental status, cranial nerve deficits (e.g., anisocoria, nystagmus, facial asymmetry), tremors, seizures, and proprioceptive deficits.
- Possible causes
- Etiologies are broadly categorized using the VETSAID mnemonic: Vascular, Infectious/Inflammatory, Traumatic/Toxic, Structural/Congenital, Autoimmune, Idiopathic, and Degenerative/Metabolic/Neoplastic.
- Diagnostic approach
- Diagnosis is based on a structured neurological examination: mental status, cranial nerves, postural reactions, spinal reflexes, and muscle tone/atrophy analysis. Advanced imaging (MRI, CT) and cerebrospinal fluid (CSF) analysis are gold-standard diagnostic adjuncts.
- Management
- Treatment is etiology-dependent, ranging from anti-inflammatory and immunosuppressive therapy (e.g., corticosteroids) to anticonvulsants, surgical decompression for structural lesions, and supportive care for traumatic injuries.
References
- [1]Dewey, C.W.. A Practical Guide to Canine and Feline Neurology (2015)
- [2]Platt, S.R.. Small Animal Neurological Emergencies (2012)
Related Articles
Clinical Management of Defaecatory Tenesmus
Defaecatory tenesmus is a clinical sign characterized by persistent, ineffective, and often painful efforts to defecate. This article explores the underlying etiologies, diagnostic approaches, and management strategies for this frequently encountered veterinary challenge.
Ecchymosis and Petechiation: Clinical Assessment of Bruising in Small Animals
Bruising, clinically categorized as petechiae or ecchymosis, often indicates underlying hematologic dysfunction, vascular disorders, or trauma. This article provides a systematic approach to differentiating between coagulopathies and vasculopathies in veterinary patients.
Exercise Intolerance in Companion Animals
Exercise intolerance is a non-specific clinical sign characterized by an animal's inability to perform or sustain physical activity appropriate for its age, breed, and fitness level. This article outlines the multi-systemic origins of this condition and provides a diagnostic framework for the veterinary practitioner.
Clinical Assessment of Body Condition in Veterinary Patients
Body Condition Scoring (BCS) is a fundamental diagnostic tool used to assess a patient's nutritional status, adiposity, and overall health. Standardized systems allow clinicians to objectively monitor changes in weight and energy balance across various species.