Scarica la Relazione - Fondazione Disturbi del Sonno

Diagnostic Criteria:
A. The patient has a complaint of an inability to fall asleep at the desired clock time, an
inability to awaken spontaneously at the desired time of awakening, or excessive
sleepiness.
B. There is a phase delay of the major sleep episode in relation to the desired time for sleep.
C. The symptoms are present for at least 1 month.
D. When not required to maintain a strict schedule (e.g., vacation time), patients will exhibit
all of the following:
1. Have a habitual sleep period that is sound and of normal quality and duration
2. Awaken spontaneously
3. Maintain stable entrainment to a 24-hour sleep-wake pattern at a delayed phase
E. Sleep-wake logs that are maintained daily for a period of at least two weeks must
demonstrate evidence of a delay in the timing of the habitual sleep period.
F. One of the following laboratory methods must demonstrate a delay in the timing of the
habitual sleep period:
1. Twenty-four-hour PSG (or by means of 2 consecutive PSG and 1 MSLT)
2. Continuous temperature monitoring showing that the time of the absolute temperature
nadir is delayed into the second half of the habitual (delayed) sleep episode
G. The symptoms do not meet the criteria for any other sleep disorder causing inability to
initiate sleep or excessive sleepiness.
Minimal criteria: a+b+c+d+e
Severità in base al tempo di addormentamento rispetto all’orario desiderato: (2,3,4 ore)