The most obvious sign of bleeding is bleeding itself. However, bleeding can also happen internally and not be so obvious. There are many non-obvious signs and symptoms of bleeding. One for example, can experience symptoms like tiredness, fatigue, dizziness, nausea, skin discoloration, or swelling, pain, a fast heartbeat, sweating and skin paleness. A healthy person can actually lose up to 50% of their blood volume before severe symptoms occur. Severe symptoms of bleeding can include an abnormal low blood pressure, fainting, and unconsciousness. Hemorrhage is not always immediately visible, especially if it’s internal bleeding. It can go undetected for quite a long time, especially in the absence of any obvious trauma or injury. However, unusual pain or discoloration of the skin can be an important clue. Your body has the natural ability of stopping a bleed on its own. Bleeding from small cuts and bruises stop within minutes if not seconds. Larger bleeds that involve blood vessels or blood-rich organs like your liver or spleen, even with normal coagulation function might not stop on its own. To stop this type of bleed, surgical intervention is usually required. Any unusual and unexplained symptoms should prompt you to seek emergency care, but especially if an obvious injury occurred. However, as discussed, bleeding can happen spontaneously without any obvious reasons. So it’s always wise to seek emergency care if you’re feeling unwell.