Inclusion Criteria:  Written informed consent by the participants Presence of one of the following chronic pain conditions of the upper limbs:  osteoarthritis (OA), complex regional pain syndrome (CRPS)  Exclusion Criteria:  Inability to follow study procedures, e.g., due to language problems, psychological disorders, dementia, etc. of the participant Extreme motion sickness, nausea, or dizziness to the virtual simulations Currently pregnant or breastfeeding women High risk populations for Covid-19 (i.e., high blood pressure, chronic respiratory condition, diabetes, presence of autoimmune disease, cardiovascular disease, presence of cancer)