Mallory-Weiss syndrome occurs as a tear or laceration in the upper part of the stomach and the lower esophagus. Forceful retching, coughing, vomiting, or even hiccups cause it. This tear may rupture blood vessels and induce bloody vomit when the person throws up. Mallory-Weiss tears make up about 5 percent of hemorrhages or bleeding incidents in the upper GI tract. This symptom was first described in alcoholics, but a person doesn't need to be an alcoholic to have this condition.
People who have Mallory-Weiss syndrome may not know that they have it unless they vomit. Mallory-Weiss Syndrome is characterized by bloody vomit and occasionally black, tarry stools. The bloody vomit may be severe, or it may be light. The blood in the vomit will be bright red as though it just came from a blood vessel.
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