you have not change under insomnia articles Symptoms of insomnia can be caused by or can be co-morbid with:
it should read Causes and co-morbidities Symptoms of insomnia may be caused by or can be co-morbid with or may not happen as it depends on individuals: Please edit it as it is quite silly to put the cause as it can happen. Let me post you a question. Does it mean that if you have stress in life means you will have symptoms of insomnia? I have friends who experience high stress in work but that doe not mean he will get insomnia. In fact he sleeps like a pig. Please justified this statement.