Narcolepsy Mnemonic - USMLE Forums
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USMLE Step 1 Mnemonics Mnemonics, acronyms, reminders, and memorizing tips for the USMLE Step 1.


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Old 10-26-2009
lee-usmle's Avatar
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Psyche Narcolepsy Mnemonic

Although it's often referred to as the narcolepsy tetrad am going to make it a pentad for USMLE and mnemonic purposes.

Just remember CHASE

here's the key
  • Cataplexy, sudden loss of tone while awake. Considered by many as a pathognomonic sign of narcolepsy.
  • Hypnagogic hallucinations experience as the patient falls into sleep (don't confuse with hypnapompic which occurs while waking up and can be seen in normal people)
  • Automatism (Automatic behavior) in which the sleeper continues to do wakefullness behavior such as talking or throwing objects.
  • Sleep paralysis, as with Cataplexy this symptom is though to be due excessively activated REM sleep.
  • Excessive Daytime Sleeping (EDS), remember that this is also seen in patients with sleep apnea
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  #2  
Old 10-26-2009
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this is truly a high yield topic
I was asked about it in Step 1 and in CK
thanks Lee for helping our colleagues out there
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Behavioral-Sciences-, Psychiatry-

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