A traumatic brain injury (TBI) can affect many different functions of the body and mind.

Because the brain controls movement, thinking, emotions, and many automatic body functions, symptoms can vary greatly from person to person.

Some symptoms appear immediately after an injury, while others may develop hours, days, or even weeks later.

In many cases, people may not initially realize that their symptoms are related to a brain injury.

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Common signs and symptoms may include:

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Head-related symptoms

• Headaches (ranging from mild to severe)

• A feeling of pressure in the head

• Dizziness or light-headedness

• Nausea or sometimes vomiting

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Balance and coordination problems

• Loss of balance

• Poor coordination

• Feeling unsteady when walking

• A general sense of being dazed or disoriented

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Thinking and memory difficulties

• Difficulty concentrating

• Memory problems

• Slower thinking or feeling mentally “foggy”

• Confusion or trouble finding the right words when speaking

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Sensory changes

• Blurred or double vision

• Ringing in the ears (tinnitus)

• Increased sensitivity to light or sound

• Changes in the sense of taste or smell

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Energy and sleep disturbances

• Fatigue or unusual drowsiness

• Sleeping more than usual

• Difficulty falling asleep or staying asleep

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Emotional and behavioral changes

• Mood swings

• Irritability or agitation

• Anxiety or feelings of depression

• Unusual behavior or difficulty regulating emotions

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Neurological symptoms

In some cases, more serious symptoms may occur, such as:

• Slurred or unclear speech

• Weakness or numbness in the hands or feet

• Convulsions or seizures

• Persistent hiccups

• Marked confusion or unusual behavior

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Symptoms may vary widely

It is important to understand that not everyone experiences the same symptoms, and the severity of symptoms does not always reflect the severity of the injury.

Some people may experience only mild issues such as headaches or fatigue, while others may struggle with concentration, balance, or emotional changes.

 

If symptoms persist after a head injury, it may indicate that the brain is having difficulty fully restoring its normal balance and communication with the body.

Recognizing these symptoms early can help guide appropriate care and support the brain’s natural recovery process.