Sequential testing for headache complaints.
D001145:Arrhythmias, Cardiac / Q000150:complications; D001772:Blood Cell Count; D001932:Brain Neoplasms / Q000150:complications / Q000175:diagnosis; D002533:Cerebral Angiography; D014695:Cerebral Ventriculography; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D002908:Chronic Disease; D004569:Electroencephalography; D006257:Head / Q000000981:diagnostic imaging; D006261:Headache / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007003:Hypoglycemia / Q000150:complications; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging; D010817:Physician-Patient Relations; D011011:Pneumoencephalography; D011877:Radionuclide Imaging; D013129:Spinal Puncture; D013587:Syphilis / Q000150:complications; D014552:Urinary Tract Infections / Q000150:complications