In the primary repression phase, 'it is highly probable that the immediate precipitating causes of primal repressions are quantitative factors such as...the earliest outbreaks of anxiety, which are of a very intense kind'.
1 A psychiatrist treats mood disorders, such as anxiety and depression, which can contribute to sleep problems. Psychiatrists may conduct therapy and prescribe medication to relieve symptoms.  A psychologist provides psychotherapy to treat mood disorders that can interfere with sleep.
There are several types of neurology doctors: 1  Neurologists focus on diagnosing and treating diseases, disorders, and injuries of the brain and nervous system. 2  Neurosurgeons perform delicate interventional procedures on the brain and nerves.