Laryngospasm: an underdiagnosed symptom of X-linked spinobulbar muscular atrophy

The authors reviewed the occurrence and concomitant factors of laryngospasm in X-linked spinobulbar muscular atrophy (Kennedy disease [KD]). Recurrent laryngospasm was observed in 47% of 49 patients with KD, but in only 2% of a control group of patients with early-stage ALS.