Chronic fatigue syndrome (CFS) is a disorder characterized by extreme fatigue or tiredness that doesn’t go away with rest and can’t be explained by an underlying medical condition.

Baseline check for CFS
1.lab: liver, kidney, iron, hormones, vitamin deficiencies, infections, allergies, autoimmune function. 2. attention, focus, memory check (TOVA: test of variable attention) 3. stress, mood evaluation (PAI: personality assessment inventory)
*COST	for NHI (national health insurance) -- around krw 500,000 won for other insurance: around krw 1,000,000