Evaluation of chronic pain in children.
D000005:Abdomen; D000293:Adolescent; D002114:Calcinosis / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D006261:Headache / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D006849:Hydrocephalus / Q000150:complications; D007403:Intervertebral Disc; D007405:Intervertebral Disc Displacement / Q000503:physiopathology; D007938:Leukemia / Q000503:physiopathology; D008881:Migraine Disorders / Q000175:diagnosis; D009380:Neoplasms, Nerve Tissue / Q000503:physiopathology; D010146:Pain / Q000175:diagnosis / Q000209:etiology*; D013122:Spinal Diseases / Q000503:physiopathology; D013125:Spinal Neoplasms / Q000503:physiopathology