Judging from the majority of cases, Covid-19 has a fever, sore throat, fatigue, cough; a respiratory virus that causes shortness of breath and breathing in even more severe cases.
However, as far as we now understand, the coronavirus has symptoms ranging from gastrointestinal (gastrointestinal) disorders such as diarrhea and nausea, which can also infect cells outside the respiratory system, to heart conditions and blood clotting disorders. It seems that now we will add neurological symptoms to this list.
Coronavirus neurological symptoms
Many recent studies have revealed the presence of neurological symptoms in Covid-19 cases. It has been reported many times that Covid-19 patients suffer from Guillain-Barré syndrome. Guillain-Barré syndrome is a neurological disorder that results in muscle difficulty and eventually paralysis as a result of the immune system accidentally attacking nerve cells while fighting the virus.
Other studies have identified severe symptoms such as encephalitis (brain inflammation, swelling) and stroke stroke, among other mild symptoms in healthy young people.
In addition, a larger study was conducted on the prevalence of neurological disorders in Covid-19 patients in China and France. Studies have shown that 36% of patients have neurological symptoms.
Most of the symptoms were mild symptoms, such as headaches and lightheadedness, which could be caused by a strong immune response. More severe and pronounced symptoms such as loss of smell or taste, weakening of the muscles, seizure, stroke stroke and halisations were also seen.
These symptoms were generally seen to have severe cases with an estimated frequency ranging from 46% to 84%. In severe cases, there were also changes in consciousness such as dysorientation (lack of awareness of attention) and movement disorders, and these changes were found to continue even after recovery.
The virus can spread from the lungs to the brain
SARS-CoV-2, which causes Covid-19, can cause neurological problems either directly by infecting the brain or as a result of strong mobilization of the immune system. It was also stated that the infected of the olfactory nerves in the nose can cause the virus to leap from the lungs to the brain.
Human brain cells have ACE2 protein on their surface that regulates blood pressure, detects viruses, and is also found in blood vessels in endothelial cells. Infection of endothelial cells can transmit the virus from the lungs to the blood, and from there, the blood passes the brain to the brain. Once it reaches the brain, repetition of the virus can cause neurological disorders.
SARS-CoV-2 can also result in direct immune response to strong immunity in the form of Guillian Barré syndrome. But it can also indirectly cause brain inflammation associated with neurological degenerative diseases such as Alzheimer’s and Parkinson’s disease, though not exactly, such as brain swelling.
SARS-CoV-2 is not the first respiratory virus to affect the brain. Influenza, measles, respiratory syncytial viruses can infect the brain or nervous system center and cause neurological disorders. The pathway of the left that reaches the brain is a rare occurrence of infections.
But with millions of Covid-19 infections worldwide, there is a risk of serious neurological diseases, especially in severe cases. It is important to be aware of the possibility of Covid-19’s neurological symptoms in both short-term sudden diseases and long-term conditions. This also emphasizes the importance of preventing viral spread / contamination and determining who is infected and who it is.