Editing Internal bleeding (section)

== Signs and symptoms ==
Signs and symptoms of internal bleeding may vary based on location, presence of injury or trauma, and severity of bleeding. Common symptoms of blood loss may include: 

* Lightheadedness
* Fatigue
* Urinating less than usual
* Confusion
* Fast heart rate
* Pale and/or cold skin
* Thirst
* Generalized weakness

Visible signs of internal bleeding include:

* Blood in the urine
* Dark black stools
* Bright red stools
* Bloody noses
* Bruising
* Throwing up blood

Of note, it is possible to have internal bleeding without any of the above symptoms, and pain may or may not be present.<ref>{{Cite web |title=DynaMed |url=https://www.dynamed.com/approach-to/bleeding-disorders-approach-to-the-patient#GUID-3E705886-D638-4802-8787-DAC11314E72B |access-date=2023-10-08 |website=www.dynamed.com}}</ref>

A patient may lose more than 30% of their blood volume before there are changes in their vital signs or level of consciousness.<ref name=":3">{{cite journal |last1=Cannon |first1=Jeremy |date=January 25, 2018 |title=Hemorrhagic Shock |journal=The New England Journal of Medicine |volume=378 |issue=4 |pages=370–379 |doi=10.1056/NEJMra1705649 |pmid=29365303 |s2cid=205117992}}</ref> This is called hemorrhagic or [[hypovolemic shock]], which is a type of [[Shock (circulatory)|shock]] that occurs when there is not enough blood to reach organs in the body.<ref name=":2">{{cite book |title=International Trauma Life Support for Emergency Care Providers |date=2018 |publisher=Pearson Education Limited |isbn=978-1292-17084-8 |pages=172–173 }}</ref>