Cullen sign is a symptom of acute intra-peritoneal bleeding. It appears as bruises and swelling around your belly button. Healthcare providers consider Cullen sign to be a medical emergency. Conditions that may cause Cullen sign include acute necrotizing pancreatitis, ruptured ectopic pregnancy and trauma from being hit in your abdomen.
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Cullen sign (periumbilical ecchymosis) is a term healthcare providers use to describe bruises and swelling in skin around your belly button (umbilicus). Providers consider Cullen sign a medical emergency. It means you have sudden, severe bleeding in your abdominal cavity.
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The bruising may look different depending on the reason why you have peritoneal bleeding and how much bleeding the condition causes. For example, mild bleeding can cause bruising that’s yellow in color.
More severe bleeding causes darker bruises. Bruising in Cullen sign may be brown, black, dark blue or purple. The bruises may be painful to the touch.
You may have bleeding if you take a hard hit to your belly, or you have a disease that causes it. Regardless of the cause, you should go to the emergency room or call 911 (or your local emergency service number) if you see bruises and swelling around your belly button.
Cases involving Cullen sign are rare. Healthcare providers often link Cullen sign with acute necrotizing pancreatitis or ruptured ectopic pregnancy. Cullen sign may be one of several symptoms. For example, severe necrotizing pancreatitis may cause symptoms, including:
Ruptured ectopic pregnancy symptoms may include:
These conditions can cause life-threatening bleeding in your belly. Cullen sign may be a symptom of other conditions, such as:
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There’s no treatment for Cullen sign, but there are treatments for the conditions that cause it. Your treatment will depend on the underlying condition. Healthcare providers may treat internal bleeding with:
Cullen sign doesn’t happen right away. It can take up to 48 hours before bleeding in your belly causes it. You may have other symptoms of severe internal bleeding, like feeling faint.
Cullen sign is named for gynecologist Dr. Thomas Cullen. He was the first healthcare provider to describe the symptom in connection with ruptured ectopic pregnancy.
Cullen sign and Grey Turner sign are bruising that acute pancreatitis may cause. The difference is that Cullen sign appears around your belly button. Grey Turner sign is bruising on the side of your body between your ribs and your hip (flank). Grey Turner sign may happen if you bleed in the back of your belly.
Having Cullen sign can be a scary experience. You know there are bruises and swelling around your belly button, but you may not know why. Cullen sign is a symptom of severe bleeding in your belly. This is a medical emergency and a reason to call 911 or go to an emergency room. Healthcare providers will find out why you have Cullen sign. That information may be your first step toward managing the condition that causes it.
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Last reviewed on 07/08/2025.
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