Types and causes of insomnia
Acute insomnia lasts less than 3 months and is typically triggered by a specific stressor: a difficult life event, illness, travel, or schedule change. It usually resolves once the trigger is removed. Chronic insomnia occurs at least 3 nights per week for 3+ months and often persists long after the initial trigger is gone — because the person has developed conditioned arousal (the bed becomes associated with wakefulness and frustration) and maladaptive habits that perpetuate sleeplessness independently of the original cause.
Common underlying causes include: anxiety and depression (the most frequent comorbidities — insomnia and mental health disorders are bidirectionally linked); chronic pain; obstructive sleep apnea (which should be ruled out in anyone who snores heavily, wakes frequently, or feels unrefreshed despite adequate sleep time); certain medications (stimulants, corticosteroids, some antidepressants, beta-blockers); hyperthyroidism; and nocturia (frequent nighttime urination). Addressing underlying causes is essential for treatment success.
Key facts
- ✓CBT for Insomnia (CBT-I) is more effective than sleeping pills long-term and produces no dependence
- ✓Sleep restriction therapy (a CBT-I component) temporarily worsens sleep before dramatically improving it
- ✓Spending more time in bed when you can't sleep worsens insomnia — a common and counterintuitive error
- ✓Benzodiazepines and Z-drugs (zolpidem) should be used short-term only — they worsen sleep quality over time
- ✓Melatonin is mildly useful for jet lag and circadian rhythm issues but has limited evidence for chronic insomnia
Struggling to sleep?
A doctor can evaluate what's driving your insomnia and recommend the most effective treatment — online from S/80.
Book consultation →Sleep hygiene: what actually works
These evidence-based habits form the foundation of insomnia treatment: Consistent sleep and wake times (even on weekends) — the most important single habit to regulate circadian rhythms. Use the bed only for sleep and sex — not reading, watching TV, or working in bed. Get up if you can't sleep after 20 minutes — go to another room and do something calm until sleepy. Avoid screens for 30–60 min before bed — blue light suppresses melatonin secretion. Avoid caffeine after 2 PM and alcohol within 3 hours of bedtime (alcohol helps you fall asleep but fragments sleep in the second half of the night).
Keep the bedroom cool (18–20°C is optimal for sleep), dark, and quiet. Avoid long naps (over 20 minutes) during the day, especially late afternoon. Regular exercise improves sleep quality — but intense exercise within 2 hours of bedtime may delay sleep onset in sensitive people. Develop a wind-down routine (shower, light reading, stretching) that signals the brain that sleep is approaching.
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Online medical consultation from S/80. Available across all of Peru.
Book nowTreatments: CBT-I and medication
CBT for Insomnia (CBT-I) is the first-line treatment for chronic insomnia. It includes sleep restriction (temporarily limiting time in bed to consolidate sleep), stimulus control (reassociating the bed with sleep), sleep hygiene education, cognitive restructuring (addressing catastrophic thoughts about sleep), and relaxation techniques. It produces sustained improvement in 70–80% of patients — better long-term results than any medication — typically over 6–8 sessions with a psychologist. Digital CBT-I programs are also available and have good evidence.
When medication is needed short-term: low-dose doxepin (3–6 mg) and melatonin receptor agonists have the best evidence with the lowest risk. Zolpidem (5–10 mg) and other Z-drugs are effective but should be used for fewer than 4 weeks due to tolerance, rebound insomnia on stopping, and fall risk in older adults. Benzodiazepines are not recommended for chronic insomnia. A doctor should evaluate before prescribing any sleep medication, particularly to rule out sleep apnea (which sleeping pills can worsen).
FAQ
How do I know if I have sleep apnea vs. insomnia?
Key differences: sleep apnea is characterized by snoring, witnessed apneas, morning headaches, and daytime sleepiness despite adequate time in bed. Insomnia typically involves lying awake without snoring. A doctor can screen for sleep apnea and refer for a sleep study if needed — this is important because sleeping pills worsen apnea.
Is melatonin safe and effective for insomnia?
Melatonin is safe and most useful for jet lag and circadian rhythm issues (shift workers, delayed sleep phase). For primary insomnia, its effect is modest. It does not produce dependence and is appropriate for short-term use. Typical dose is 0.5–3 mg taken 30–60 min before desired bedtime.
Can an online doctor prescribe sleeping medication in Peru?
Yes. A Delvir physician can evaluate your insomnia, rule out underlying causes, recommend CBT-I, and prescribe short-term medication when clinically appropriate, with a digital prescription valid at pharmacies throughout Peru.
Why does lying in bed longer make insomnia worse?
When you spend more time in bed awake, the brain associates the bed with wakefulness and frustration — a form of conditioned hyperarousal. This is why sleep restriction therapy (a CBT-I core technique) works: by concentrating sleep drive and reconditioning the bed-sleep association, it breaks the insomnia cycle.
Conclusion
Insomnia is not something you have to endure. Effective behavioral treatment (CBT-I) produces lasting results without medication, and when short-term pharmacological support is needed, a doctor can prescribe safely. The first step is understanding what's driving your insomnia.
At Delvir, you can consult a physician online from S/80, from anywhere in Peru.