Confusion CT

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Confusion Microchapters


Patient Information




Differentiating Confusion from other Symptoms

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis


History and Symptoms

Physical Examination

Laboratory Findings


Chest X Ray



Echocardiography or Ultrasound

Other Imaging Findings

Other Diagnostic Studies


Medical Therapy


Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Confusion CT On the Web

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American Roentgen Ray Society Images of Confusion CT

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Risk calculators and risk factors for Confusion CT

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]


A CT scan of the head is an important diagnostic tool in cases of confusion where a cause couldn't be established. Before a lumbar puncture is done, a CT scan is the first test used in cases of suspected infections such as meningitis.


This test is not done as part of a routine evaluation for confusion. It is ordered when no significant cause is established.

  • CT scan of the head has to be performed before proceeding to a lumbar puncture.
  • CT scan of the head helps in identifying any lesions of the brain causing confusion.
  • A CT aids in identifying associated co morbid conditions of the brain.
  • It is needed when it's tough to get a history from the patient and other causes can't be established.
  • It is ordered when a patient is not responding to treatment.
  • It is helpful in finding primary sites of the tumor in cases of confusion caused by metastatic lesions of the brain.


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