Similar Diseases
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Results for Query ‹ Dyssomnia screening ›
Sleep state misperception – Symptoms and diagnosis | Spectral analysis
According to a May 2014 article published in NewScientist, spectral analysis may help clinicians find objective evidence for sleep state misperception:
Sleep state misperception – Distinction from "true" insomnia
What is considered objective insomnia, unlike SSM, can easily be confirmed empirically through clinical testing, such as by polysomnogram. Those who experience SSM may believe that they have not slept for extended periods of time, when they in fact do sleep but without perceiving it. For example, while patients who claim little or no sleep may usually acknowledge impaired job performance and daytime drowsiness, sleep state misperceivers often do not.
Cases of objective total insomnia are extremely rare. The few that have been recorded have predominantly been ascribed to a rare incurable genetic disorder called fatal familial insomnia, which patients rarely survive for more than 26 months after the onset of illness—often much less. While rarer cases of objective total insomnia lasting for decades have been reported, such as with the American Al Herpin and the Vietnamese Thai Ngoc, they have not been studied extensively in a clinical setting.
Autoimmune encephalitis – Autoimmune antibodies associated neurological syndromes (AAANS) | GABA receptor Ab syndrome | Treatment
The administration of immunotherapy, in association with chemotherapy or tumor removal, .
Autoimmune encephalitis – Neurological syndromes associated with autoimmune antibody (NSAAA) | Morvan's syndrome | Investigation
MRI Brain: shows only evidence of small vessel disease, and normal in 92% of patients.
EEG: Nonspecific slow wave abnormality. Polysomnography shows complete absence of sleep.
Antigenic Source: VGKC-complex antibodies were present in 23 of 29 (79%), CASPR2, LGI1 antibodies, or both, CASPR2 antibodies were generally higher titer than LGI1 antibodies and associated with thymoma. LGI1 antibodies were associated with serum hyponatremia.