[The role of gastrointestinal ulcer in the differential diagnosis of low back pain].

The authors call on attention for the differential diagnostical problems of low back pain and the importance of the Head zones by describing one case. A patient was admitted to hospital with severe symptoms of low back pain. In her previous medical history there were musculo-skeletal problems for many years in addition to continuous medical investigation and treatment for low back pain for three months. Careful examination revealed a five-centimetre large gastric ulcer in the background of her symptoms.