When the doctor smells a rat, but is completely off the scent.
D000063:Accidents, Traffic; D000368:Aged; D003951:Diagnostic Errors; D006261:Headache / Q000209:etiology; D006408:Hematoma, Subdural / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008306:Malingering; D009460:Neurologic Examination; D010292:Paresthesia / Q000209:etiology; D010808:Physical Examination; D011877:Radionuclide Imaging