Laryngeal Paralysis (Congenital)
Congenital laryngeal paralysis occurs through neurodegeneration of the recurrent laryngeal nerve which innervates the cricoarytenoideus dorsalis muscle resulting in the arytenoid cartilages not abducting normally.
Age of Onset: 4-8 months of age is most common but can present at any age
Sex Predisposition: Any sex of animal can be affected
Clinical Course:
Clinical signs may worsen over time
Clinical signs may worsen over time
Clinical Signs:
*Laryngeal paralysis may be associated with additional polyneuropathies
Movement
Collapse
Pelvic limb weakness
Proprioception
Proprioceptive deficits
Special Functions (e.g. respiration; urination)
Dyspnea
Exercise intolerance
Stertor
Inspiratory stridor
Muscle Atrophy
Atrophy of cricoarytenoideus dorsalis - no apparent on clinical examination
Other
Cough
Hoarse bark
Noisy breathing (wheezing)
*Laryngeal paralysis may be associated with additional polyneuropathies
Movement
Collapse
Pelvic limb weakness
Proprioception
Proprioceptive deficits
Special Functions (e.g. respiration; urination)
Dyspnea
Exercise intolerance
Stertor
Inspiratory stridor
Muscle Atrophy
Atrophy of cricoarytenoideus dorsalis - no apparent on clinical examination
Other
Cough
Hoarse bark
Noisy breathing (wheezing)
Peripheral nerves/neuromuscular junction
Autosomal dominant inheritance
To read more about this disease click below:
