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.
Insomnia can be related to a medical or psychiatric illness, can be caused by mental stress or excitement, or can be caused by your daytime and bedtime habits. Your habits and surroundings are the usual causes of short-term insomnia problems. Factors that contribute to insomnia can include: