Iâm pregnant and have had a blood test for chickenpox. The blood test can show that you: 1  Are immune (have already had varicella disease or varicella vaccine) and have no sign of recent infection. You have nothing further to be concerned about.  Are not immune and have not yet been infected.
Causes of acute insomnia can include: 1  Significant life stress (job loss or change, death of a loved one, divorce, moving) 2  Illness. 3  Emotional or physical discomfort.  Environmental factors like noise, light, or extreme temperatures (hot or cold) that interfere with sleep.
Medications. A number of over-the-counter medications can cause insomnia. Pain medications, decongestants, and weight-loss products can contain caffeine or other stimulants. Antihistamines may make you drowsy at first, but they can lead to frequent urination that means more nighttime trips to the bathroom.