LARYNGEAL PARALYSIS (LP) According to CVMBS Colorado State, a dog with laryngeal paralysis is 21 times more likely to develop megaesophagus, another neuromuscular (nervous system) disease. The suggestion has been made that hypo- thyroidism may be a cause of laryngeal paralysis. This question is also not fully answered. We know that other neuropathies associated with hypothyroidism will respond to treatment for hypothyroidism but laryngeal paralysis in a hypothyroid dog will not.