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There are many symptoms and criteria for a head injury. You can get some serious damage to the brain. Brain injuries are the most common injury to the head.
head trauma
The time between the injury and the appearance of symptoms can vary from less than 48 hours to several weeks, or more.
Epilepsy occurs in 2-5% of those who have had a head injury; it is much more common in people who have had severe or penetrating injuries.
The outlook for someone with a minor head injury generally is good, although recovery may be delayed and symptoms such as headache, dizziness, and cognitive problems can persist
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Changes in vision and nausea and vomiting are all common symptoms of migraine headaches known as Classic Migraine, or Migraine with Aura. Not all people have migraines with those symptoms, but many people do. If you normally get migraines and suddenly have a change where your head pain is accompanied by new symptoms, it is always wise to get it checked out by a physician. If your "migraine" is right after a recent head injury and you begin to have symptoms such as blurred vision and vomiting, you need to go to the emergency room, as you may have a closed head injury such as a concussion or bleed to the brain.
concussion
diabetic reactions, head injury, drug overdose
Any injury involving the head should be taken seriously. She could have a concussion or a unresolved blood clot in her brain from the fall. She needs to be evaluated by a neurologist. Untreated,this could lead to more serious problems. Dizziness,forgetfulness,severe vomiting,bleeding from the ears,and difficulty in waking up would be symptoms to watch for.
Signs of an internal injury: 1. Localised swelling2. Discolouration of the skin Symptoms of an internal injury: 1. Localised pain 2. The patient will protect and guard the injury siteOther signs include: 1. The patient with blood coming out the ears and nose - Head Injury 2. The patient that coughs up blood - Thoracic Injury 3. The patient with blood in their stool - Abdominal Injury
Choking or vomiting