Increased daytime sleepiness

Excessive daytime sleepiness (EDS) is a condition characterized by an irresistible need for sleep during the day, which can significantly affect the overall quality of life of the patient. This disorder can manifest itself both as a result of sleep disturbances and as a symptom of various pathologies, including diseases of the central nervous system, metabolic and respiratory disorders. EDS can be primary, when the disorder occurs independently, or secondary, when it is a consequence of other diseases. Given the impact on cognitive functions, work capacity and general psychoemotional state, daytime sleepiness requires a comprehensive approach to diagnosis and treatment.

History of the disease and interesting historical facts

Excessive daytime sleepiness has been known to mankind for centuries, beginning with references in ancient Greek and Roman medical literature. Scientists of antiquity were interested in studying sleep and insomnia, but systematic research into this condition began only in the 20th century. A breakthrough in understanding PDS was the discovery of narcolepsy in the 1880s, which led to attention to sleep disorders and their manifestations. In addition, in the mid-20th century, the development of polysomnography and sleep stage analysis made it possible to understand the mechanisms associated with sleepiness in greater detail. Importantly, many cultural traditions have emphasized the importance of sleep as an element of health, which is supported by historical texts and artifacts.

Epidemiology

Epidemiological studies show that excessive daytime sleepiness affects 10-30% of the adult population, depending on various factors such as lifestyle, sleep quality, and the presence of comorbidities. For example, according to the National Sleep Institute, 20% adults experience EDS to varying degrees. An important aspect is the age dependence; older people suffer from this disorder more often. There is evidence that more than 60% patients with sleep disorders report symptoms of EDS, which emphasizes the multifactorial nature of this problem.

Genetic predisposition to this disease

Research suggests that genetic factors play a significant role in the predisposition to excessive daytime sleepiness. In particular, certain candidate genes have been identified that may be associated with this condition. Mutations in genes involved in sleep-wake cycle regulation, such as the DEC2 gene or the GOOD family of genes, may contribute to the development of EDS. Twin studies suggest that relatives with identical genes are more likely to develop the disorder than unrelated individuals. This information points to the need for further research into the genetic predisposition to sleep disorders.

Risk factors for the development of this disease

Risk factors that contribute to the development of PDS can be divided into physical and chemical. Physical factors include:

• Chronic sleep disorders (eg, insomnia or sleep apnea);
• Certain chronic diseases (eg, type 2 diabetes, chronic obstructive pulmonary disease);
• Older age.

Chemical factors include the use of alcoholic beverages, certain medications (such as antidepressants or antihistamines), and narcotic substances. Psychological aspects such as stress and depression also play an important role in the development of PDS.

Diagnosis of this disease

Diagnosis of excessive daytime sleepiness involves a number of steps. The main symptoms to look out for are:

• Irresistible drowsiness during the day;
• Problems with concentration;
• Decreased productivity;
• Frequent episodes of falling asleep at inappropriate times.

Laboratory tests may be performed to rule out biomedical conditions such as anemia or hypothyroidism. Radiological tests, including MRI or CT scans, may help rule out neurological conditions. Other tests, such as polysomnography, can help evaluate sleep quality and structure. It is important to perform a differential diagnosis to rule out other conditions that may cause similar symptoms, such as sleep apnea syndrome.

Treatment

Treatment for excessive daytime sleepiness can be complex and vary depending on the cause of the condition.

• General treatment: Includes lifestyle changes, improved sleep patterns, psychological therapy.
• Pharmacological treatment: most often involves the use of stimulants such as methylphenidate or modafinil to increase wakefulness.
• Surgical treatment: is rarely considered, but may be indicated when certain structural abnormalities are identified.
• Other types of treatment: such as cognitive behavioral therapy to treat insomnia or psychotherapy to address associated anxiety disorders.

List of medications used to treat this disease

There are a number of medications that can be used to treat PDS:

• Modafinil;
• Armodafinil;
• Methylphenidate;
• Solridamfetol;
• Escitalopram (in case of concomitant depression).

Disease monitoring

Monitoring of patients with excessive daytime sleepiness includes regular check-ups, health assessment, and symptom dynamics. The prognosis for patients may vary depending on the cause of sleepiness; if the underlying disease is successfully treated, much can be corrected. Complications may include deterioration in quality of life, decreased ability to work, and the development of associated disorders such as depression.

Age-related features of the disease

Excessive daytime sleepiness may manifest itself differently depending on the age group. In children, EDS may be associated with developmental disorders or ADHA syndrome. In adults, sleepiness is most often caused by stress, lack of sleep, or comorbidities. In older people, EDS often occurs due to age-related changes, deteriorating health, and comorbidities such as osteoarthritis or diabetes.

Questions and Answers

• What are the main causes of excessive daytime sleepiness? PDS may be associated with lack of sleep, sleep disorders, chronic diseases, and psychological factors.
• Can diet affect PDS? Yes, poor nutrition and lack of vitamins and microelements can contribute to the development of drowsiness.
• What kind of doctor should treat PDS? Typically, treatment for PDS is supervised by a neurologist or somnologist.
• Do I need to take medication to treat PDS? Medications may be prescribed if the disorder is significant, but drug therapy is not always required.
• Can PDS be prevented? Maintaining a sleep schedule, eating a healthy diet, and being physically active can help prevent PDS.

Advice from Dr. Oleg Korzhikov

Dr. Oleg Korzhikov recommends paying attention to several key aspects to avoid increased daytime sleepiness:

• Maintain a sleep routine: try to go to bed and get up at the same time.
• Avoid overeating before bed and limit your intake of caffeine and alcohol.
• Regular exercise can help improve the quality of your sleep.
• If you have symptoms of PDS, do not delay visiting a doctor to avoid complications.

Understanding the importance of healthy sleep and actively managing your condition can help many people significantly improve their lives and avoid PDS.