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Most people go through a series of other tests and often get other diagnoses, most commonly refractory (unresponsive) asthma, before they have a laryngoscopy and receive a definite diagnosis of VCD.
This was similar to indirect laryngoscopy (1 out of 11 firms ).
If these actions are not enough to determine the cause of the cough, a bronchoscopy or laryngoscopy may be ordered.
The best way to determine if an individual has VCD is by doing a laryngoscopy.
In a laryngoscopy, a slender, flexible tube containing a fiber optic camera is inserted through the nose and down the throat to the larynx.