What are the signs and symptoms of severe brain damage?

The signs and symptoms of severe brain damage can vary depending on the specific area of the brain that is affected. However, some common signs and symptoms include:

1. Altered level of consciousness: This can range from drowsiness and confusion to complete unconsciousness (coma).

2. Difficulty with speech and understanding language: This may include slurred speech, difficulty understanding what is being said, or the inability to speak at all.

3. Vision problems: This may include blurred vision, double vision, or the loss of vision in one or both eyes.

4. Motor problems: This may include weakness, paralysis, difficulty with coordination, or tremors.

5. Sensory problems: This may include numbness, tingling, or pain in different parts of the body.

6. Seizures: These are sudden, uncontrolled electrical discharges in the brain that can cause a variety of symptoms, such as shaking, jerking, loss of consciousness, or temporary confusion.

7. Changes in personality and behavior: This may include irritability, aggression, apathy, or changes in social behavior.

8. Memory loss: This may include difficulty remembering recent events, or the inability to form new memories.

9. Difficulty with learning: This may include difficulty paying attention, processing information, or understanding new concepts.

10. Problems with judgment and decision-making: This may include difficulty making decisions, taking risks, or understanding the consequences of their actions.

It's important to note that not all people with severe brain damage will experience all of these symptoms. The symptoms they experience will depend on the specific area of the brain that is affected and the severity of the damage.