I'm sorry to hear that you've been struggling with acute insomnia for about a week despite your efforts with regular walks and light exercise. Insomnia lasting this long can be quite distressing.

Acute insomnia can have various causes, including stress, anxiety, changes in routine, or underlying medical conditions. Since lifestyle measures alone haven't helped, it may be beneficial to consider medical evaluation.

There is a medication called Meloset Tablet, which contains melatonin—a hormone that helps regulate the body's sleep-wake cycle. Melatonin supplements can sometimes aid in improving sleep patterns by synchronizing the circadian rhythm. However, this medication should only be taken under the guidance of a doctor, as it may have side effects like dizziness, drowsiness, headache, or nausea. It is also important to avoid alcohol and not operate machinery while taking it.

Given your ongoing symptoms, I strongly recommend consulting a sleep specialist or a doctor who can assess your situation thoroughly. They can help identify any underlying causes and recommend appropriate treatment, which may include behavioral therapies, medication, or other interventions tailored to your needs.

If your insomnia worsens or you experience severe symptoms such as mood changes, confusion, or physical health issues, please seek urgent medical attention.

Take care, and I hope you find relief soon.To narrow down potential causes, we will need some more information.Please tell me your age and gender. I understand that you are suffering from acute insomnia. Not having slept for about a week is a long time.