[Chronic fatigue. IV--Assessment of a 40-year-old patient].

A forty year old patient was referred by the federal insurance for medical assessment. His presenting complaint was chronic fatigue. The patient had been an intravenous drug user for years and had been infected with hepatitis C. He was treated with interferon. The patient history showed that he also suffered from anaemia and depression. He participated in a methadone substitution program. Our diagnostic procedures showed that he also has Hashimoto's thyroiditis.