Complex sentence: Many of the symptoms are not specific to vocal cord dysfunction and can resemble a number of conditions that affect the upper and lower airway, such as asthma, angioedema, vocal cord tumors, and vocal cord paralysis.
Split into simpler sentences: Many of the symptoms are not limited to the disorder, as they may resemble a number of conditions that affect the upper and lower airway. Such conditions include asthma, angioedema, vocal cord tumors, and vocal cord paralysis.