Some common side effects of head trauma include trouble with speaking, remembering and learning, according to the Alzheimer's Association. The patient might also have problems with balance, vision and hearing. Head trauma may also increase a person's risk of developing Alzheimer's disease later in life.
In the worst case, the patient may remain permanently unconscious, claims the Alzheimer's Association.
The immediate symptoms of a head trauma include nausea and vomiting, dizziness, memory loss and sensitivity to light, according to MedicineNet. Other symptoms are the leakage of blood or cerebrospinal fluid from the ear, difficulty speaking or swallowing, and an overall numbness. Head trauma patients often become irritable and show other personality changes.
At first, the patient may not show signs of a head trauma, says MedicineNet. Symptoms start to appear when the brain starts to swell or bleed inside the skull. This is why it is important to closely observe a person who has suffered even what seemed to be a mild head injury. The patient does not need to suffer a direct blow to the head to have brain trauma.
Another side effect of head trauma is coma, says MedicineNet. The depth of the coma is measured by the Glasgow coma scale. The scale measures the extent to which the patient can open his eyes and how he
responds verbally. It also measures the patient's motor response.