Episodic weakness

From Dog

Episodic weakness in dogs is a symptom rather than diagnosis.

Affected dogs present with variable periods of activity followed by collapse, panting and sometimes syncope (collapsing into unconsciousness).

There are numerous causes, including:

- Hypertrophic neuropathy
- Chiari malformations
- Syringomyelia
- Myasthenia gravis
- Seizures
- Brain tumors
- Narcolepsy
- Cauda equina syndrome
- Wobbler syndrome
- Scottie cramp
- Episodic falling
- Vestibular disease
- Polymyositis
- Duchenne muscular dystrophy
- Golden Retriever Muscular Dystrophy
- Nemaline myopathy
- Centronuclear myopathy
- Degenerative myelopathy
- Wolff-Parkinson-White syndrome
- Sick sinus syndrome
- Cardiomyopathy
- Ventricular tachycardia
- Atrioventricular muscle dystrophy
- Patent ductus arteriosus
- Dysrhythmia
- Bradyarrhythmia
- Sinus arrest
- 2nd or 3rd degree heart block
- Tachydysrhythmia
- Supraventricular tachycardia
- Ventricular tachycardia
- Subaortic stenosis
- Pulmonic stenosis
- Pericardial tamponade
- Congestive heart failure
- Patent ductus arteriosus
- Tetralogy of Fallot
- Heartworm disease
- Angiostrongylus spp
- Vasovagal syncope
  • Respiratory diseases
- Brachycephalic syndrome
- Tracheal paralysis
- Hypoplastic trachea
- Pulmonary interstitial fibrosis
- Pleural effusion
- Pneumothorax
  • Metabolic diseases
- Hypoadrenocorticism
- Hypoglycemia
- Exercise-induced collapse
- Exertional rhabdomyolysis
- Hypermagnesemia
- Hypophosphatemia
- Hypokalemia
- Hyperkalemia
- Diabetic ketoacidosis
- Hypokalemia
- Hypoparathyroidism
- Insulinoma
- Hypothyroidism
- Phaeochromocytoma
- Hepatic encephalopathy
- Portosystemic shunt

References