2. difficulty concentrating,
3. behavioral changes and irritability.
It is important to know this as you should seek medical care immediately to make sure you are okay. If not, then medical care is needed to help you through the head injury. To this end, the medical care will protect you not only medically, but it will protect you for your legal case as well. All medical evidence needs to be gathered and properly documented so your injury lawyer can make a solid case for your injuries and medical care.