COMFI - a COMbined Fatigue Intervention

Inclusion Criteria: 1. Current fatigue level (VAS-Fatigue: The VAS-fatigue has to be 60 or above. 2. Must have experienced fatigue as a challenge for at least the last 3 months 3. A rheumatologist-confirmed diagnosis of Rheumatoid Arthritis, Psoriatic Arthritis, or Spondyloarthritis 4. The patient is in a stable phase regarding disease activity. This means no current plans to adjust pharmacological treatment, and no changes in treatment in the last 3 months (DMARDs or steroids) incl. steroid injections. 5. Must be affiliated with the Danish Hospital of Rheumatic Diseases or Skaane University Hospital in Lund. 6. Age ≥18 years. 7. Must be able to speak and write Danish or Swedish well enough to participate in group discussions without an interpreter. 8. The participant must be interested in actively participating and making changes to daily life to improve their condition. Exclusion Criteria: 1. Pregnant or breastfeeding 2. Critical/serious illness: * Diseases with an expected survival of \< 2 years (e.g., cancer) * Heart failure with NYHA class 3 or 4 * Kidney failure with eGFR \< 30 * Severe anemia - hemoglobin ≤ 5.0 mmol/L 3. Clarification of known diseases, which must be well-treated or in remission: * Diabetes: HbA1c \>53 mmol/mol is excluded if dysregulated * Thyroid disease: TSH: 0.4-4.0 mE/L. Excluded if dysregulated 4. A medical condition that would make the proposed interventions unsuitable/impossible for group participation or hinder the ability to give informed consent: * Unstable psychiatric illness * Dementia or other severe cognitive problems * Hearing loss/use of hearing aids (it must be clarified how the person feels about being in a group setting) * Other physical or mental conditions with the above effect 5. Conditions that may be the primary cause of fatigue: * Long-term effects after COVID-19 * Chronic fatigue syndrome 6. Participation in another research project that could affect fatigue (WORK-ON, INSELMA, SPINCODE) 7. Participation in the fatigue program for hospitalized patients or support in another way specifically related to fatigue 8. The participant must not have a planned rehabilitation stay (e.g., Danish Rheumatism Hospital, Sano, Montebello) or another program elsewhere that works with fatigue 9. If the participant cannot commit to attending on the scheduled dates in one of the two programs.