Brief, factual summary in Slovak: The article deals with Kounis syndrome, which is a rare form of allergic reaction that can look like an acute myocardial infarction (STEMI). Kounis syndrome is caused by an allergic reaction to various triggers such as drugs, food, or latex that leads to acute coronary syndrome. Symptoms of Kounis syndrome include chest pain, shortness of breath, drop in blood pressure, and STEMI-like electrocardiogram changes. Early diagnosis and treatment are crucial because Kounis syndrome can lead to serious complications such as cardiogenic shock or acute heart failure. Treatment consists of administration of high doses of corticosteroids and antihistamines, as well as management of cardiovascular complications. Prevention of Kounis syndrome involves identifying and avoiding the triggers of the allergic reaction.