What Does It Mean When Vomit Is Bright Yellow?

What Does It Mean When Vomit Is Bright Yellow?

When vomit is bright yellow or greenish yellow in color, it means that the vomit contains bile, a substance that is secreted by the liver, according to Parents. Yellow vomit in babies can be indicative of a birth defect that causes an obstruction in the gastrointestinal tract. It can also indicate a twisted bowel or a blockage of meconium.

Bile-stained vomit is a medical emergency, warns Parents magazine. Babies vomiting bright yellow should be taken in for immediate evaluation. Although a twisted bowel or a meconium blockage is usually diagnosed during a baby's first month, children of school age can develop twisted bowel if they are congenitally predisposed to the condition.