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Excessive daytime sleepiness (EDS) is a medical condition characterised by persistent drowsiness and difficulty staying awake during the day, even after adequate rest. In the UK, it is estimated that one in five adults experiences problematic sleepiness, often linked to underlying health conditions.

Common Causes

• Sleep disorders: Obstructive sleep apnoea, narcolepsy, insomnia

• Lifestyle factors: Poor sleep hygiene, shift work, irregular schedules

• Medical conditions: Depression, diabetes, thyroid disorders, neurological illnesses

• Medication side effects

Symptoms

People with EDS may struggle with concentration, memory, and alertness. This can increase the risk of accidents, affect work productivity, and reduce quality of life.

Diagnosis and Treatment

A GP or sleep specialist may recommend sleep studies, blood tests, or lifestyle assessments to identify the cause. Treatment often involves:

• Improving sleep habits

• Treating underlying medical conditions

• Cognitive behavioural therapy for insomnia (CBT-I)

• In some cases, prescription medicines or Nootropics to improve wakefulness

When to Seek Help

Persistent daytime sleepiness should not be ignored. Consulting a GP or NHS sleep clinic can help identify the cause and ensure safe, effective treatment.