What are the symptoms of loss of blood?

The clinical term for loss of blood (also known as low blood volume) is hopovolemia. Hypovolemia is a dangerous condition and can result in hypovolemic shock and eventually, death. From a first aid standpoint, it is vital that any external bleeding is controlled, and the patient treated for hypovolemic shock.

Possible signs and symptoms of blood loss include the following:

- Obvious signs of open trauma

- Weakness, dizziness and lethargy

- Signs of hypovolemic shock

- Pain

- Fainting

- Nausea and vomiting

- Patient may know that he/she is bleeding

- Visual detection by first aider

- Detection through the Primary Haemorrhage Check (primary survey/blood check)

It is important any serious bleeding be evaluated by a medical professional urgently. If in doubt about the severity of the condition, call an ambulance or seek urgent medical aid.