Causes-Disorders of consciousness

Disorders of consciousness can occur if the parts of the brain responsible for consciousness are injured or damaged.

The main causes can generally be divided into:

Common examples of these types of brain damage are outlined below.

Traumatic brain injury

Traumatic brain injury occurs when an object or outside force causes severe trauma to the brain.

This is most often caused by:

Non-traumatic brain damage is usually caused by a health condition, such as:

a condition that deprives the brain of oxygen (without a continuous supply of oxygen, brain tissue begins to die)
a condition that directly attacks brain tissue

Specific causes of non-traumatic brain injury include:

strokes
heart attacks
severe brain infections (such as meningitis, an infection of the outer layer of the brain, or encephalitis, an infection of the brain itself)
drug overdoses
poisoning
almost drowning or other types of suffocation, such as smoke inhalation
a blood vessel bursting, leading to bleeding inside the brain (the medical term for this is a ruptured aneurysm)

In some cases, brain damage can gradually occur over time.

Examples of conditions that cause progressive brain damage include: