Inclusion Criteria:  Signed informed Consent form (see Appendix) Capable of consent (language/cognitive) At least 18 years of age Ability to attend an online conference in regard of physical and psychological condition and technical knowhow and equipment  In addition, participants have to be affected by one of the following conditions/disorders:  Chronic back pain Chemotherapy-induced emesis (last occurrence at least before 14 days and at maximum before one year) Chronic migraine Parkinson's disease Clinically significant menopausal complaints  Exclusion Criteria:  Severe ailment and medication side-effects which would interfere with study participation (e.g., due to concentration impairment) Acute psychological crisis which would affect study participation essentially or suicidality Co-morbidity that overlaps in symptoms with the symptoms necessary for inclusion Essential psychiatric disorders other than moderate depression