In chemo brain, damage to myelin slows their transmission. Myelin, the fatty coating insulating the long arms of the neurons, helps speed the transmission of nerve signals. They uncovered key details in how chemotherapy impairs the function of the brain’s white matter, regions of the brain normally rich in well-insulated nerve fibers that quickly transmit signals from one place to another. Monje’s team has spent two decades studying cognitive impairment after cancer. “The exciting message is that because the pathophysiology is so similar, the last couple of decades in cancer therapy-related research can guide us to treatments that may help COVID brain fog.” Nerves’ insulation damaged The overlap between what happens in COVID-19’s cognitive aftermath and chemo brain, as it’s colloquially known, could be good news for patients because it may speed research on treatments, Monje said. The study’s lead authors are Anthony Fernandez-Castaneda, PhD, a postdoctoral scholar at Stanford Anna Geraghty, PhD, an instructor of neurology at Stanford and Peiwen Lu, PhD, and graduate student Eric Song, both of Yale. Monje shares senior authorship of the study with Akiko Iwasaki, PhD, professor of immunology and of molecular, cellular and developmental biology at Yale University. “We found that even mild COVID can cause prominent inflammation in the brain that dysregulates brain cells and would be expected to contribute to cognitive impairment,” said Michelle Monje, MD, PhD, professor of neurology and neurological sciences. The findings may help guide treatments for cognitive effects of COVID-19, the scientists said. ![]() The discovery, described in a paper that published online June 12 in Cell, relied on studies of mice with mild SARS-CoV-2 infection and postmortem human brain tissue collected early in the pandemic. ![]() It’s important to consult a doctor if you are experiencing brain fog as they will be able to help you determine the cause and recommend appropriate treatment.Brain fog after COVID-19 is biologically similar to cognitive impairment caused by cancer chemotherapy, something doctors often refer to as “chemo brain.” In both cases, excessive inflammation damages the same brain cells and processes, according to research led by Stanford University School of Medicine. These are some examples of neurological disorders that can cause brain fog, but there are many other conditions that can also cause this symptom. Alzheimer’s Disease: a neurological disorder that goes beyond mental fuzziness, individuals who begin to develop Alzheimer’s disease often experience problems with cognition, and memory loss that relate to brain fog and alert them to seek help.Lyme Disease: an infection caused by bacteria that can cause neurological symptoms such as brain fog, memory problems and cognitive decline.Multiple Sclerosis: a chronic disease that affects the central nervous system and can cause cognitive symptoms such as difficulty with memory and concentration. ![]() Depression: a mental health disorder that can also cause cognitive symptoms such as difficulty focusing and making decisions.Migraine: a type of headache that can also cause cognitive symptoms such as difficulty with memory, focus, and communication.Chronic Fatigue Syndrome: a complex disorder characterized by severe fatigue that is not improved by rest, and can also cause cognitive symptoms such as brain fog.Fibromyalgia: a chronic pain disorder that can also cause fatigue, sleep disturbances, and cognitive symptoms such as brain fog.There are several neurological disorders that can cause brain fog as a symptom, including: What Neurological Disorder Causes Brain Fog?
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