Our body senses two types of pain, acute and chronic. Acute pain lasts for a short time. It occurs when our body wants to protect us from a dangerous situation. This way, our nerves are telling us that something is wrong. But if some time passes since our injury, treatment or surgery and the pain or discomfort persists, we are speaking of chronic pain. It is often diffi cult to determine its intensity or even prove its existence. The discomfort and pain are not relieved and physical pain may be accompanied by mental issues. At present, during the COVID-19 pandemic, chronic pain is becoming more prominent, and it is also associated with the post-COVID syndrome. In their efforts to help patients suffering from COVID-19, many new treatment protocols have been prepared and various antiviral drugs and other potentially useful drugs have been used (often without prior approval or testing). Basically, it was a kind of 'experimental' treatment. At present, thanks to quick therapy decisions and as part of COVID-19 prevention, we have succeeded in stabilising the situation all over the world. A relatively fast development of vaccines against SARS-CoV-2 with a view to achieve collective immunity has greatly contributed to this. On the other hand, 'quick decisions' have contributed to other signifi cant issues which we are beginning to deal with now, i.e, in the effort to defeat the virus, many experts regarded the adverse effects of the medications used to be of secondary importance. In the article we would like to point out the other side of the 'successful' treatment of COVID-19, namely the possible iatrogenic conditions which signifi cantly contribute to the post-COVID-19 syndrome and chronic pain. The importance of preventive measures over uncertain result of COVID-19 treatment is emphasised (Tab. 4, Fig. 1, Ref. 50).