How would a neurologist help with sleep problems?

Depends on problem. If you have sleep apnea, snoring or persistent day time sleepiness, you may need an overnight polysomnogram. They may also order additional testing. Insomnia tends to be related to behavior, sleep hygiene or stress.
Neurologist 4 sleep. I neurologist can help with sleep problems by listening to your sleep history and possibly ordering tests that will look at brain waves and breathing during sleep to see if you have a primary sleep disorder.