Safety and Effectiveness and Effect on Quality of Life and Work Productivity of Humira in Patients With Psoriatic Arthritis in Clinical Routine

Safety and effectiveness, quality of life and work productivity of Humira in patients with psoriatic arthritis in clinical routine.

The primary objective of the Non-Interventional Study is to explore the therapeutic success, measured by improvements in the following target variables (with regard to the respective baseline value): * The number of missed working days * The self-assessed workability * The severity of clinical symptoms (number of tender and swollen joints, C-reactive Protein and erythrocyte sedimentation rate respectively; total score Disease Activity Score 28, Psoriasis Area and Severity Index) * The severity of functional impairment (Health Assessment Questionnaire) * The health-related quality of life . All of the patient and disease characteristics which are documented at baseline will be evaluated for their additional impact on the target variables (therapeutic success). Particularly the impact of previous biologic therapies on clinical target variables will be evaluated. The secondary objective is to document the therapeutic success by the following variables: * The number of physician visit * The number and duration of hospitalization * The number of days of impairment in non-occupational activities * Pain, exhaustion/fatigue * The reduction of number and dose of concomitant medication * Patient's assessment of adalimumab therapy compared to previous therapies. Target parameters for safety evaluation of adalimumab are: * The evaluation of safety and tolerability by the documentation and analysis of serious adverse events (SAEs) and adverse events (AEs) * Evaluation of safety and tolerability for subgroups of patients with common frequent concomitant diseases, especially diabetes type II, cardiovascular, liver, and renal insufficiencies, and related concomitant medications.