Excessive daytime sleepiness and increased alertness at night is a symptom of what condition?

Generally, feeling particularly drowsy during the day and especially energetic at night may be caused by circadian rhythm disorders, poor sleep quality, physical fatigue, neurasthenia, hypothyroidism, and other factors. If discomfort occurs, it is recommended to seek medical attention promptly. Detailed explanations are as follows:

1. Circadian Rhythm Disorders

The human body has a natural internal clock typically operating on a 24-hour cycle. When this biological clock is disrupted, it can lead to daytime sleepiness and nighttime alertness. Establishing a regular sleep schedule, attempting to sleep and wake up at the same time daily, and avoiding consumption of stimulants like coffee and tea before bedtime are recommended.

2. Poor Sleep Quality

Excessive stress, consumption of stimulating foods or beverages before bedtime, and environmental noise may lead to poor sleep quality, manifesting as daytime drowsiness and increased alertness at night. It is advisable to maintain a quiet, comfortable, and warm bedroom environment and avoid disturbances from noise and light.

3. Physical Fatigue

Extended work pressure, lack of exercise, or malnutrition may cause physical fatigue, resulting in daytime tiredness and increased alertness at night due to insufficient physical exertion. It is recommended to manage work and rest periods reasonably and avoid overexertion.

4. Neurasthenia

Excessive psychological pressure, prolonged tension, or emotional issues such as anxiety may lead to neurasthenia. In addition to daytime drowsiness and nighttime alertness, symptoms may include anxiety, depression, and irritability. Medications such as Oryzanol tablets or Vitamin B12 injections may be taken under medical guidance for relief.

5. Hypothyroidism

When thyroid function is reduced, decreased secretion of thyroid hormones lowers the body's metabolic rate, potentially causing daytime sleepiness and increased alertness at night, accompanied by symptoms such as fatigue and anxiety. Consultation with a doctor regarding a subtotal thyroidectomy, which involves removing part of the thyroid tissue to promote recovery, is recommended.

In daily life, maintaining a regular schedule, taking appropriate rest breaks, avoiding prolonged late nights, following a light diet, and increasing consumption of vitamin-rich vegetables and fruits, such as tomatoes, carrots, grapefruits, and apples, can contribute to overall health.