Patient-reported outcome measures (PROMS) are becoming increasingly important in daily health care. The International Classification of Functioning, Disability and Health (ICF) Core Sets can be tools to support this development. This case report describes an intervention for a patient with lymphoedema after multiple erysipelas infections and the use of the ICF Core Sets for lymphoedema to monitor treatment progress. The patient’s answers to the questions based on the ICF Core Set were in line with the results of the outcome measurements used and these demonstrate their practical use.