Psoriatic arthritis belongs to a group of seronegative spondyloarthropathies. It is characterized by the involvement of the joints and skin psoriasis. The disease is classified into the stages of inflammation and remission. The cause of the disease is not sufficiently clarified and the diagnosis is made by subjective and objective examination, laboratory and radiological examinations. After the diagnosis has been made, the treatment method is individually chosen for which there is a distinctly separate treatment of psoriasis and joint inflammation. Treatment includes medication therapy, but most of the time physiotherapy takes place. The intervention begins with a proper assessment, supplementing the individual physiotherapy plan. Depending on the stage of the disease and the individual case, the most appropriate treatment program is chosen. It may include therapy by specific physiotherapeutic exercises, education, application of numerous physical agents, and due to the specificity of the disease (skin manifestations in the form of psoriasis) natural factors can also be useful. The aim of this paper is to provide a more detailed insight into the definition and characteristics of psoriatic arthritis and to describe the possibilities of physiotherapeutic interventions.