The investigators will first carry out a small trial in up to 40 patients with established disease to determine the best dose that reduces the activity of the cells responsible for the disorder (Dose Response study). In this part patients who will be having surgery to remove their diseased tissue will receive a single injection of adalimumab into the nodule in their hand about 2 weeks before surgery. The tissue that is then removed during surgery will be analysed in the investigator's laboratories to determine the effect of the drug on the tissue. Patients will be followed for 12 weeks after surgery.