Depression and anxiety, tinnitus, earaches, feeling sick, diarrhea, stomach aches, loss of appetite, a high temperature, cough, headaches, sore throat, and changes to sense of smell or taste are all possible symptoms of COVID-19.

In Chinese medicine, COVID-19 is considered a type of flu or cold, which means that the body is being attacked externally (as opposed to internal health problems like digestive issues, urinary tract infections, or sleep problems). Even though COVID-19 is more contagious and has more severe symptoms, it can still lead to internal problems such as lung and digestive issues. Overall, it is still considered a fast-developing and more severe form of the flu. Therefore, the treatment principle in Chinese Medicine remains the same, which is to clear the external factors from the body and make the body "sweat out" the "coldness."

According to medical and scientific research, COVID-19 can cause inflammation, endotheliitis, vasoconstriction, hypercoagulability, and edema, which can impact the entire body, from the lungs to the heart, kidneys, brain, and even the reproductive and immune systems of both males and females. Even if someone recovers from COVID-19 and tests negative, they may still experience multi-organ effects or autoimmune conditions with symptoms that can last for weeks, months, or even years after the illness. Multi-organ effects can involve many body systems, including the heart, lungs, kidneys, skin, and brain, and this is known as Long COVID or Post-COVID conditions.

The reason for Long Covid and Post-COVID conditions in Chinese Medicine is that the "external" was not completely "cleared up." The fascia of the organs was affected by the "external" sick "Qi."

In Chinese Medicine history, in 1642 AD, Dr. Wu You-Ke published a book called "Wen Yi Lun" (which means "On Plague Diseases"). It was the first book to discuss the plague that occurred at that time and how to use herbs to treat it.