Extreme morning tiredness

Specialty: General.

• pathological sleep inertia
• severe difficulty waking up
• morning prostration
• awakening asthenia

Why it occurs

• Obstructive sleep apnea-hypopnea syndrome (OSAS, where repeated nocturnal hypoxia and sleep fragmentation prevent neurological restoration, causing intense fatigue upon awakening)
• Major depressive disorder with a pattern of diurnal variation of symptoms (where depressed mood and asthenia are maximum in the morning and partially improve throughout the day)
• Chronic adrenal insufficiency or hypocortisolism (absence of the physiological morning cortisol peak, necessary to raise blood pressure, blood glucose, and sympathetic tone upon awakening)
• Circadian rhythm disorders such as delayed sleep phase syndrome (naturally sleeping very late, resulting in severe deprivation when waking up early due to obligations)
• Use of sedative or hypnotic medications with a long half-life taken at night (such as diazepam, fluracepam or mirtazapine, whose active metabolites persist in the morning).

Initial workup

Diagnostic nocturnal polysomnography, serum cortisol and ACTH curve in the morning (08:00 h), glycosylated hemoglobin (HbA1c), complete metabolic panel, and detailed pharmacological review by a specialist.

Standard management

• Hydrocortisone — 10 to 15 mg orally immediately upon awakening, only in patients with documented adrenal insufficiency, to mimic the physiological cortisol peak
• Melatone — 1 to 3 mg orally administered early in the evening to advance the sleep phase if circadian disorder is confirmed
• Gradual and scheduled withdrawal of long-acting sedative drugs under medical indication.