You can’t sleep well
This doesn’t have anything to do with having a hard time falling asleep when you aren’t tired at all, but if you can’t get any sleep at all, despite a deep feeling of exhaustion, you should visit your doctor. Acute insomnia can appear due to a lot of stress at work or home, or a traumatic event.
Chronic insomnia, on the other hand, can simply be caused by medications such as cold remedies, stimulants, or antidepressants. Also, insomnia can appear as a symptom of anxiety or depression, but also when you suffer from chronic pain, overactive thyroid, GERD, Parkinson’s, or Alzheimer’s disease.