🌙 不眠症

不眠症と臨床的不眠症の違いは？

不眠症は睡眠に関する体験を指し、不眠症は臨床診断です。診断基準には週3晩以上、3ヶ月以上の症状が必要です。 #VibeCoding

慢性的な睡眠不足は脳にどう影響する？

前頭前野の実行機能を損ない、注意力とワーキングメモリ容量を減少させます。扁桃体の反応性は約60%上昇します。

睡眠薬は長期使用しても安全？

推奨されません。ベンゾジアゼピン系睡眠薬は2-4週間で耐性を生じる可能性があります。CBT-Iが推奨される長期治療です。

週末の寝だめは効果的？

急性疲労を和らげることはできますが、慢性的なダメージを元に戻すことはできません。一貫した睡眠スケジュールが最も効果的です。

いつ睡眠専門医に相談すべき？

以下の場合：①慢性的な睡眠問題（3ヶ月以上）；②日中の重度の眠気；③観察された無呼吸；④気分や記憶への顕著な影響。 #EmotionalFitness

Should people with 不眠症 check the time immediately upon waking?

No. Repeatedly checking the clock increases "sleep performance anxiety"—the more you calculate how much time remains to sleep, the higher your brain arousal level. One core CBT-I strategy is "clock masking": turning the clock away or placing it out of arm's reach to break the vicious cycle between time monitoring and insomnia anxiety.

Why does trying harder to fall asleep make it worse?

Sleep is an automatic physiological process that cannot be forcibly triggered by willpower. When you actively try to fall asleep, the prefrontal cortex remains hyperactive, suppressing the brainstem nuclei responsible for sleep. This paradox is called the "sleep effort paradox"—the harder you try, the more awake you become. The alternative strategy is "relaxed wakefulness": if you cannot fall asleep within 20 minutes, get up and engage in low-stimulation activity.

Can patients with 不眠症 use melatonin?

Melatonin is not a sleeping pill but a "chronobiotic" signal hormone. It is most effective for circadian rhythm disorders (e.g., jet lag, shift work), but its effect on sleep-onset insomnia is limited and highly individual. Low doses (0.3-0.5mg) are recommended over high doses, as high doses may cause next-day drowsiness and abnormal dreams. Long-term safety data remain insufficient; use under medical guidance is advised.