Shift Work Sleep Disorder(SWSD) and Modafinil (Modalert)

What is SWSD? It is a sleep disorder resulting from a constant or recurring disruption of your normal sleep patterns. Our bodies are usually adjusted to a natural circadian rhythm in which we sleep at night and are awake during the day. Anyone working nontraditional hours or shift such as 4 pm to midnight or midnight to 8 am are very likely to suffer from SWSD.
Modafinil decreases extreme sleepiness due to narcolepsy and other sleep disorders such as difficult/irregular breathing during sleep (e.g., obstructive sleep apnea/hypopnea syndrome-OSAHS). It is also used to help you stay awake during work hours for people with work schedules that interfere with a normal sleep routine (shift work sleep disorder-SWSD).
It is not known how modafinil works to increase wakefulness. It is thought to work by affecting certain chemicals in the brain that control the sleep/wake cycle.
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