There are board-certified sleep medicine specialists. It has not been shown that they take superior care of patients with obstructive sleep apnea hypopnea syndrome (OSAHS).
Sleep disorders are not taught in medical schools. Therefore, most doctors simply have not been trained to diagnose and treat persons with sleep disorders.
By a board-certified sleep medicine specialist and followed until the best therapy is chosen and the fatigue has dramatically improved.
Also, people with OSAHS will need to have repeat studies performed every year because, with aging and changes in weight, OSAHS and treatment choices can change.