Insomnia is a sleep disorder that may occur acutely
and dissipate or may become a vexing chronic disorder.
Although difficulty in initiating and/or maintaining
sleep is a fairly straightforward complaint, a thorough
assessment of the presenting insomnia is well worth
the upfront effort before formulating and delivering
a specific intervention strategy. The pathophysiology
of insomnia can actually be somewhat complex (or at
least multi-factorial) because of the many inputs to the
sleep-wake system in general and the additional specific
behaviours and cognitions which an individual layers
on top of the physiologic substrates.