Companion Animals

Dog Canine Myasthenia Gravis: Recognition and Management

Myasthenia gravis causes progressive muscle weakness in dogs and significantly impacts quality of life without early diagnosis and treatment.

Key Facts

Canine myasthenia gravis causes muscle fatigue especially of limbs and oesophagus
Megaoesophagus from MG causes regurgitation and aspiration pneumonia risk
Anticholinesterase drugs restore neuromuscular transmission with good clinical response
Over 50% of acquired MG cases undergo spontaneous remission within 18 months

Welfare Considerations

MG causes progressive weakness and risk of aspiration pneumonia from megaoesophagus. The indignity and discomfort of regurgitation and weakness is significant. Early diagnosis and appropriate treatment allows most dogs to maintain good quality of life during the spontaneous remission period.

What You Can Do

Seek specialist assessment if your dog shows episodic weakness after exercise
Manage megaoesophagus with upright feeding (Bailey chair) to prevent aspiration
Support spontaneous remission by maintaining pyridostigmine treatment during the recovery period