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 neurologist treats brain and nervous system disorders that may contribute to sleep problems.  An otolaryngologist treats ear, nose, and throat conditions. This doctor may evaluate snoring and other breathing problems associated with sleep disorders.
Rating Newest Oldest. Best Answer: Any type of doctor can perform these type of studies. What must be taken into consideration when dealing with sleep disorders and which type of doctor will be best suited to diagnose and treat a patient is, what is the root cause for the sleep disorder?. There are many causes for sleep issues.