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.
New User Basics. If you suspect you have Sleep Apnea, speak with your general care doctor or sleep doctor. Your doctor may refer you to a sleep lab for a sleep study. Based on your sleep study results, your doctor may diagnose you with Sleep Apnea and prescribe sleep therapy.