Over the years, attention deficit disorder has become a common occurrence affecting and projections state that around 3 to 7 percent of the children are affected. The disorder comprises of symptoms such as distractibility, poor constant attention, irritability, impulsiveness, and hyperactivity. These developmental deficits ascend comparatively early in childhood, characteristically before a child reaches 7 years, and may continue well over time. Clinicians propose three subtypes of attention deficit and hyperactivity disorder (ADHD): predominantly hyperactive, predominantly inattentive, and combine types. As yet, neither clinicians nor researchers have confirmed the causes or etiological factors behind the development of the disease. Instead, many studies suggest that anomalies in the function and anatomy of the prefrontal cortex of the brain as well as its networks might be behind this disorder.
Many researchers have delved into studies leading to the advancement of the Diagnostic Statistical Manual of mental diseases classification. Over the recent past, sleep apnea has shown significant correlation with attention deficit disorder leading to further classification of the disorder. Researchers have concentrated on the neurobehavioral characteristics of the disease, assessing the response of these children to treatment. However, identifying a relationship between attention deficit and sleep apnea has not been an easy task. This paper intends to show the various limitations and successes regarding the classification and diagnosis of the two disorders: attention deficit and sleep apnea. It will also discuss the implication of discoveries in these contentious areas in diagnosis.