response: That's too bad. I'm aware that this limits a person's ability to do daily activities.
original_response: I can understand tha this is devastating because it limits your ability to perform everyday functions.
history: My friend has chronic fatigue syndrome.  Its sad
knowledge: Chronic fatigue syndrome (CFS), also referred to as myalgic encephalomyelitis (ME), is a medical condition characterized by long-term fatigue and other symptoms that limit a person's ability to carry out ordinary daily activities.