Steve Bryson, PhD, science writer —

The rate of disease onset or relapse of neuromyelitis optica spectrum disorder (NMOSD) after a SARS-CoV-2 infection — the virus that causes COVID-19 — is extremely low, at about 1 in 50 million, according to a worldwide review study. The occurrence of NMOSD was even lower, at 1 in…

Symptoms related to the autonomic nervous system, which controls automatic bodily function, have a significant impact on the quality of life of people with neuromyelitis optica spectrum disorder (NMOSD), according to a questionnaire-based study. All patients in the study experienced some autonomic system-related symptoms, or autonomic dysfunction, and most…

People with neuromyelitis optica spectrum disorder (NMOSD) have elevated levels of the pro-inflammatory protein AIMP1 in the bloodstream, and higher levels seem to correlate with worse disability, a study showed. These AIMP1 levels dropped markedly after anti-inflammatory therapy, but still remained higher among patients in remission than in people…

Adults with neuromyelitis optica spectrum disease (NMOSD) who are positive for antibodies against the aquaporin-4 (AQP4) protein have a higher prevalence of oval-shaped masses surrounding the optic nerve in their eyes than healthy people, a study showed. Although these masses were significantly linked to older age, their occurrence was…

Certain variations in the ESR1 gene — a protein-coding gene for estrogen receptor-alpha — are significantly more common among women with neuromyelitis optica spectrum disorder (NMOSD) or multiple sclerosis (MS) than among healthy women, a small study suggests. Such differences were not observed between men with these…

Brain age gap (BAG) — the difference between calendar age and predicted brain age as determined by MRI scans — was significant in adults with neuromyelitis optica spectrum disorder (NMOSD), and may predict disability in patients, a study found. The BAG was even greater in people with the related…

The incidence of pain in adults with neuromyelitis optic spectrum disorder (NMOSD) is high and was reported as the first sign of an inflammatory attack in half of patients, according to an examination of medical records. Neuropathic (nerve-related) pain, marked by uncomfortable burning or tingling, was the most common…

Inflammatory episodes in the spinal cord of people with neuromyelitis optica spectrum disorder (NMOSD) resulted in changes in functional connectivity in the brain, an imaging study shows. Functional connectivity refers to the correlation between brain signals over time that reflects functional connections between two or more brain regions. Reduced…

Measuring the retinal nerve layers by a non-invasive tool called optical coherence tomography may help to diagnose neuromyelitis optica spectrum disorder (NMOSD), especially in those who test negative for disease-related antibodies, according to a new study. Researchers found that nerve layers in the retina of people with NMOSD…

Impairments in the visual field — the total area in which objects can be seen in a person’s peripheral vision — were found in adults with optic neuritis (ON) related to neuromyelitis optica spectrum disorder (NMOSD), according to a new study. NMOSD patients with optic neuritis had more visual…