Is it a functional disorder or organic neurological disease?
D001247:Asthenia / Q000209:etiology; D001416:Back Pain / Q000209:etiology; D003863:Depression / Q000209:etiology; D003937:Diagnosis, Differential; D006261:Headache / Q000209:etiology; D006801:Humans; D009333:Neck; D009422:Nervous System Diseases / Q000175:diagnosis*; D010146:Pain / Q000209:etiology; D011602:Psychophysiologic Disorders / Q000175:diagnosis*; D012677:Sensation; D013575:Syncope / Q000209:etiology; D014717:Vertigo / Q000209:etiology