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In medicine, not otherwise specified (NOS) is a subcategory in systems of disease/disorder classification such as ICD-9, ICD-10, or DSM-IV.It is generally used to note the presence of an illness where the symptoms presented were sufficient to make a general diagnosis, but where a specific diagnosis was not made.
[30] [31] The relationship between post-stroke depression and PBA is complicated, because the depressive syndrome also occurs with high frequency in stroke survivors. Post-stroke patients with PBA are more depressed than post-stroke patients without PBA, and the presence of a depressive syndrome may exacerbate the weeping side of PBA symptoms.
Dysdiadochokinesia is a feature of cerebellar ataxia and may be the result of lesions to either the cerebellar hemispheres or the frontal lobe (of the cerebrum), it can also be a combination of both. [3]
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Sneddon's syndrome is a progressive, noninflammatory arteriopathy leading to the characteristic skin condition and to cerebrovascular problems, including stroke, transient ischemic attack (TIA), severe but transient neurological symptoms thought to be caused by cerebral vasospasm, coronary disease and early-onset dementia.
Catalepsy is a symptom of certain nervous disorders or conditions such as Parkinson's disease and epilepsy. It is also a characteristic symptom of cocaine withdrawal, as well as one of the features of catatonia. It can be caused by schizophrenia treatment with anti-psychotics, [3] such as haloperidol, [4] and by the anesthetic ketamine. [5]
All symptoms normally resolve within three weeks, and may only last days. [1] Permanent deficits are seen in a minority of patients, ranging from under 10% to 20% in various studies. [1] Less than 5% of patients experience progressive vasoconstriction, which can lead to stroke, progressive cerebral edema, or even death. [1]
The ICD-10 established a set of diagnostic criteria for PCS in 1992. [38] In order to meet these criteria, a patient has had a head injury "usually sufficiently severe to result in loss of consciousness" [33] [39] and then develop at least three of the eight symptoms marked with a check mark in the table at right under "ICD-10" within four weeks.