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Clinical Assessment and Diagnostic Approach to Generalized Weakness
Generalized weakness in veterinary patients is a non-specific clinical sign requiring a systematic approach to differentiate between metabolic, neurological, musculoskeletal, and systemic causes. This article outlines the diagnostic framework essential for clinicians to identify the underlying etiology across multiple species.
Clinical summary
- Clinical signs
- Exercise intolerance, limb trembling, difficulty rising, ataxia, collapse, and muscle fasciculations.
- Possible causes
- Metabolic (hypoglycemia, hypokalemia), Neurological (neuromuscular junction disorders, polyneuropathies), Endocrine (Addisonian crisis, hypothyroidism), Cardiovascular (anemia, congestive heart failure), and Toxicoses (botulism, organophosphates).
- Diagnostic approach
- Comprehensive physical examination, minimum database (CBC, biochemistry, urinalysis), blood gas analysis, electromyography, and imaging as indicated by findings.
- Management
- Address primary etiology; initiate supportive care including fluid therapy, electrolyte correction, and nutritional support as indicated.
References
- [1]Nelson, R. W., & Couto, C. G.. Small Animal Internal Medicine (2019)
- [2]Smith, B. P.. Large Animal Internal Medicine (2020)
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