Types of Insomnia
1. Transient Insomnia (less than one week)
Most people experience transient insomnia when under stress, excitement, anxiety, illness, at high altitudes, or when sleep patterns change (e.g., jet lag, shift work). This type usually improves as the triggering event resolves or with time, but if improperly managed, transient insomnia may progress to chronic insomnia.
Primary treatment principles for transient insomnia include intermittent use of low-dose sedative-hypnotic drugs or other sleep-promoting medications (e.g., antidepressants) and good sleep hygiene.
2. Short-term Insomnia (one week to one month)
Serious or persistent stress—such as major physical illness, surgery, death of loved ones, or severe family, work, or interpersonal problems—can lead to short-term insomnia. This type is clearly associated with stress.
Treatment principles involve short-term use of low-dose sedative-hypnotic drugs or other sleep-promoting agents (e.g., antidepressants) combined with behavioral therapy (e.g., muscle relaxation techniques). If inadequately managed, short-term insomnia may also evolve into chronic insomnia.
3. Chronic Insomnia (more than one month)
The causes of chronic insomnia are complex and often difficult to identify. Many cases result from multiple contributing factors. Possible causes include:
(1) Physical diseases causing insomnia; (Research indicates many chronic illnesses are linked to insomnia)
(2) Mental disorders or mood disturbances leading to insomnia;
(3) Use of medications, alcohol, stimulants, or drugs causing insomnia;
(4) Irregular sleep-wake cycles or circadian rhythm disorders;
(5) Uncomfortable sensations in the legs before sleep or involuntary leg movements during sleep;
(6) Snoring, irregular breathing, or other respiratory disorders during sleep;
(7) Primary insomnia (after excluding secondary causes).
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