Inclusion Criteria:  Meet the diagnostic criteria for Bodily distress syndrome (BDS) with 2-3 of 4 symptom clusters Moderate impact on daily life (self-reliant at home, can participate in activities outside the home) Symptoms lasting for at least 6 months 18-60 years at the time of inclusion Previous stable educational or occupational attachment until at least 2 years prior to enrollment and expecting to return to occupational or educational activity Motivation and time to participate in a psychological treatment program for treatment of BDS IT skills and access to internet and computer/tablet Willingness to engage in working with illness perception and behavioral change  Exclusion Criteria:  Presence of other physical condition if the symptoms of this condition can not clearly be separated from symptoms of BDS or the condition is unstable/untreated Current moderate or severe psychiatric disorder that substantially impacts daily life or demands special, individualized treatment, or clinical suspicion hereof, e.g. treatment-demanding depression or personality disorder Current continuous treatment with opioids and drugs with opioid-like properties Previous psychological treatment targeting BDS