Fear and anxiety are the first natural line of defense, just like recognising potential danger is of evolutionary importance for surviving. Unfortunately, this particular kind of protection has its price; it is also the foundation of human malaise and discomfort. An anxious person is always on the lookout expecting danger at every corner. Enjoying peaceful and quiet moments is next to impossible. The main problem originates from a disability to regulate this basic instinct. In other words, anxiety becomes a problem when a person loses its power to control fear in certain situations and starts to develop impaired assessment of the presence and fear even after the end of the dangerous or stressful situation. Such problems lead to anxiety disorders. An anxiety disorder is defined as excessive worry and tension that lasts for several days within a minimum of six months. It belongs to an extremely common group of psychiatric disorders that includes disorders caused by stress and trauma, but also a number of specific disorders such as phobias and obsessive compulsive disorder. In this context, post-traumatic stress disorder is also specific, the occurrence of which is mostly associated with war and catastrophic events, while it is significantly more rare in peacetime. The emphasis of this work is on patients who were hospitalized in Bjelovar General Hospital under diagnoses of the anxiety spectrum (including ICD-10 diagnoses from F40.0 to F43.9) in 1994 and 2017. In the mentioned years, all hospitalized patients are first processed in order to gain an insight into what diagnoses the patients were admitted for, what was the average number of days of hospitalization for individual diagnoses, and the total number of days of treatment in the first and second year. In patients hospitalized under the previously mentioned diagnoses, a comparison is made between the two target years, comparing clinical and sociodemographic characteristics. The basic hypothesis is a higher number of hospitalizations due to post-traumatic stress disorder, acute stress reaction and adjustment disorder in 1994. compared to 2017.