Acid reflux (1 of 2)
Open phase of vibration, strobe light, with white mucus sometimes but not always suggestive of acid reflux laryngitis.

Acid reflux (2 of 2)
Closed phase of vibration, strobe light, with same mucus findings.

Acid reflux laryngitis (1 of 2)
Panoramic view, shows interarytenoid pachyderma (“elephant skin”) at upper blue arrow; arytenoid redness at green arrows; and mucus retention cyst at lower blue arrow.

Acid reflux laryngitis (2 of 2)
During phonation, interarytenoid pachyderma and mucus retention cyst are typically obscured.

Acid reflux (1 of 2)
Phonation under strobe light. Mild capillary prominence.

Acid reflux (2 of 2)
As phonation proceeds, appearance of large amounts of viscous white mucus.