Symptoms of Long Covid Syndrome attributed to neurological involvement? 

The main cause of the symptoms of long covid syndrome is attributed to the SARS-COV-2 virus affecting the brain. It has been determined that the virus stays in the brain for a long time after covid infection, the way the virus enters the brain is through the olfactory nerve pathway in the nasal mucosa. It is thought that the virus causes damage by staying in the brain, activating immune cells in the body and causing inflammation in the brain. 

Symptoms related to the brain
    Brain fog; difficulty thinking, memory problems
    Headaches
    Fainting, unsteadiness
    Fatigue, burnout
    Muscle weakness
    Sleep problems
    Chronic pain

Heart symptoms
These symptoms are not due to a direct effect on the heart. Symptoms of dysotonomy due to the autonomic nervous system, which is controlled by the brain.
    Palpitations, increased heart rate (POTS; Postural orthostatic tachycardia syndrome; is a condition where the heart rate exceeds 30 beats per minute in sudden standing up)
    Difficulty in breathing
    Exercise intolerance

Gastrointestinal symptoms (Dizotonomy symptoms)
    Abdominal pain
    Gastroparesis
    Nausea