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Alzheimer's disease (AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, [2] and is the cause of 60–70% of cases of dementia. [2][15] The most common early symptom is difficulty in remembering recent events. [1] As the disease advances, symptoms can include problems with language, disorientation (including ...
This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria used to delineate various disorders and whether some of these conditions should be classified as ...
Central nervous system diseases or central nervous system disorders are a group of neurological disorders that affect the structure or function of the brain or spinal cord, which collectively form the central nervous system (CNS). [ 1 ][ 2 ][ 3 ] These disorders may be caused by such things as infection, injury, blood clots, age related ...
Functional neurologic disorder or functional neurological disorder (FND) is a condition in which patients experience neurological symptoms such as weakness, movement problems, sensory symptoms, and convulsions. As a functional disorder, there is, by definition, no known disease process affecting the structure of the body, yet the person ...
Functional weakness may also be described as functional neurological symptom disorder (FNsD), Functional Neurological Disorder (FND) or functional neurological symptoms. If the symptoms are caused by a psychological trigger, it may be diagnosed as 'dissociative motor disorder' or conversion disorder (CD).
In practice, cases may present as one type but be assessed as more appropriate to the other. [13] Neuropsychiatry deals with mental disorders arising from specific identified diseases of the nervous system. [citation needed] One area that can be contested is in cases of idiopathic neurological symptoms - conditions where the cause cannot be ...
The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in the Global North. [3] Aphasia can also be the result of brain tumors, epilepsy, autoimmune neurological diseases, [4] brain infections, [5] or neurodegenerative diseases (such as dementias). [6] [7]
Concussion. Acceleration (g-forces) can exert rotational forces in the brain, especially the midbrain and diencephalon. A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [9] Symptoms may include loss of consciousness; memory loss; headaches; difficulty with thinking ...