Fatigue MSH:D005221 2013-10-15T08:52:04Z SNOMEDCT_US:248274002 Fatigue fatigued, energy loss, lack of energy, no energy, weariness, exhausted A subjective feeling of tiredness characterized by a lack of energy and motivation. peter Tired HP:0012378 UMLS:C0015672 Malaise Tiredness 乏力 SNOMEDCT_US:84229001 Fatigue is distinct from muscle weakness. Constitutional symptom