The most common COVID-19 symptoms include fever, dry cough, and fatigue, while less frequent symptoms include loss of smell and taste, sore throat, muscle or joint pain, nausea, headache, etc. Among the more severe symptoms are shortness of breath, loss of appetite, confusion, high fever, lethargy, and chest pain.

The term long COVID relates to ongoing symptomatic COVID-19, which involves symptoms lasting from 4 to 12 weeks, as well as post-COVID-19 syndrome, which includes signs and symptoms that develop during or after the COVID-19 infection and persist for more than 12 weeks without being attributed to an alternative diagnosis.

Recent research indicates that the cause of Long COVID lies in the fact that the virus or its components persist in the body after the acute phase of the illness. Molecular genetic testing has confirmed the presence of the virus in several patients’ organs. These patients have an inadequate immune response, and their antibody levels are relatively low.

When our immune system is weakened due to the effort to neutralize COVID, it cannot produce T-lymphocytes, which help regulate blood pressure and, therefore, prevent fatigue. Chronic fatigue is also one of the most common symptoms of Long COVID, while viral infections are generally associated with fatigue, reduced stress tolerance, lethargy, memory and concentration problems, and less frequently with depression, sleep problems, and reduced physical or mental capacity.

Intravenous therapies are a very good option to alleviate COVID-19 symptoms and shorten recovery time, as they improve hydration and provide antioxidants, electrolytes, vitamins, and nutrients that the body needs.