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A 74-year-old farmer presented to the emergency department with a subacute history of progressive dyspnoea, wheeze and dysphonia. He was treated for an exacerbation of asthma with poor response to pharmacological therapy. Investigation of dysphonia via laryngoscopy identified a bilateral vocal cord palsy. Subsequently, the patient developed an episode of life-threatening stridor and hypercapnic respiratory failure requiring an emergency tracheostomy. Neurology input identified evidence of widespread muscle fasciculations on clinical exa