A vocal polyp that looks like a “blood blister” on the vocal cord. A hemorrhagic polyp may occur because of acute vocal trauma—sudden and extreme overuse of the voice—and may result in abrupt and fairly severe hoarseness that is persistent. In time, the blood may resorb and leave a translucent polyp; this kind of polyp may be prone to re-bruising intermittently.
Small hemorrhagic polyps may heal on their own, but usually require many months to do so. Larger ones should be surgically removed. Fortunately, the prognosis for full recovery after surgery is excellent.