You can in rare cases throw up poop which is an unusual symptom that is associated with gastrocolic fistulas, violent reverse peristalsis and coprophagy.
Vomiting up or throwing up poop is usually a result of a mechanical intestinal obstruction but can also be a result of paralytic obstruction or adynamic ileus.
The most common reason for vomit to be blue is a result of copper sulfate poisoning or from boric acid poisoning or paraquat poisoning.
Most cases of bluish vomiting are from reports in the countries of Southeast Asia and are often linked with self- (adults) or accidental (children) poisoning by substances such as copper sulphate, boric acid, and paraquat.
Accidental boric acid poisoning can cause a blue-ish/greenish vomit - this is a substance used in pesticides, antiseptics, et.
In some cases it could be something you ate that was blue but you should seek medical attention if yoru vomit is blue.
Pink vomit means that there is likely a presence of blood in the vomit which can come from damage to the throat, mouth or gums from coughing or vomiting.
It could also be a sign that you're starting to bleed in your intestinal tract and if the vomit gets more pink or red or black then you should seek medical attention especially if the vomit looks like coffee grounds.
Orange vomit means food poisoning after eating contaminated foods.
If you're vomiting orange you likely have food poisoning and as long as the orange vomit goes away within a day or 2 it's usually not a cause for concern.
But if the orange vomit lasts longer than a few days you should go to the ER.
Black vomit is a sign of internal bleeding or bleeding in your gastrointestinal tract.
The vomit appears black and can take on the appearance of coffee grounds from old and coagulated blood in the gastrointestinal tract.
If your vomiting black in color vomit you should see a doctor or go to the ER or urgent care.
Throwing up black vomit after excessive drinking is usually dried blood in the intestines that have been there for a while.
A benign (non-cancerous) or cancerous tumor in the stomach or oesophagus can cause the black vomit.
A severe injury to the abdominal area, as caused by a car accident or blow to the abdomen can also cause the black vomit.
Black vomit is a sign of serious health issue such as internal bleeding in most cases so you should seek medical attention right away.
Anyone who vomits blood or a substance that resembles coffee grounds should seek immediate medical attention.
If you're unable to get to the emergency room, you should call for an ambulance.
Your vomit color is a great indicator of your health status and can help piece together a diagnosis.
Yellow or green vomit can emerge with a flu virus or fasting, while black vomit is indicative of a more serious digestive problem that is causing internal bleeding.