In the past, the term<unk>  was also used to refer to immediate physical symptoms or post-concussive symptoms following a minor TBI or<unk> . The severity of these symptoms typically decreases rapidly. In addition, the nature of the symptoms may change over time: acute symptoms are most commonly of a physical nature, while persisting symptoms tend to be predominantly psychological. Symptoms such as noise sensitivity, problems with concentration and memory, irritability, depression, and anxiety may be called 'late symptoms' because they generally do not occur immediately after the injury, but rather in the days or weeks after the injury. Nausea and drowsiness commonly occur acutely following<unk> . Headache and dizziness occur immediately after the injury, but also can be long lasting. The condition is associated with a wide range of non-specific symptoms: physical, such as headache; cognitive, such as difficulty concentrating; and emotional and behavioral, such as irritability. Many of the symptoms associated with<unk>  are common or may be exacerbated by other disorders, so there is considerable risk of misdiagnosis. Headaches that occur after a<unk>  may feel like migraine headaches or tension-type headaches. Most headaches are tension-type headaches, which may be associated with a neck injury that occurred at the same time of the head injury. Physical A common condition associated with<unk>  is headache. While most people have headaches of the same type they experienced before the injury, people diagnosed with<unk>  often report more frequent or longer-lasting headaches. Between 30% and 90% of people treated for<unk>  report having more frequent headaches and between 8% and 32% still report them a year after the injury. Dizziness is another common symptom reported in about half of people diagnosed with<unk>  and is still present in up to a quarter of them a year after the injury. Older people are at especially high risk for dizziness, which can contribute to subsequent injuries and higher rates of mortality due to falls. About 10% of people with<unk>  develop sensitivity to light or noise, about 5% experience a decreased sense of taste or smell, and about 14% report blurred vision. People may also have double vision or ringing in the ears, also called tinnitus.<unk>  may cause insomnia, fatigue, or other problems with sleep. Psychological and behavioral Psychological conditions, which are present in about half of people with<unk> , may include irritability, anxiety, depression, and a change in personality. Other emotional and behavioral symptoms include restlessness, aggression, and mood swings. Some common symptoms, such as apathy, insomnia, irritability, or lack of motivation, may result from other co-occurring conditions, such as depression. Higher mental functions Common symptoms associated with a diagnosis of<unk>  are related to cognition, attention, and memory, especially short-term memory, which can also worsen other problems such as forgetting appointments or difficulties at work. In one study, one in four people diagnosed with<unk>  continued to report memory problems a year after the injury, but most experts agree that cognitive symptoms clear within six months to a year after injury in the vast majority of individuals.
Post-concussion syndrome
Post-stroke depression
Emergence delirium
Organic brain syndrome
Complications of traumatic brain injury
Drug-induced amnesia
Stroke recovery
Chiasmal syndrome