Lethargy
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Lethargy is a state of physical or mental weariness, fatigue, sluggishness, or lack of energy. It can be accompanied by depression, decreased motivation, or apathy, but can also present with having a desire, but not the energy to initiate or perform tasks. Lethargy can be a normal response to inadequate sleep, overexertion, overworking, stress, lack of exercise, improper nutrition, drug abuse, boredom, or a symptom of an underlying illness or disorder. It may also be a side effect of medication or caused by an interaction between medications and alcohol. It may also be an altered level of consciousness.
When part of a normal response, lethargy often resolves with rest, adequate sleep, decreased stress, physical exercise, and good nutrition. Its symptoms, however, can last days or even months, so it can be a sign of a recent underlying illness or infection if it does not resolve normally.
See also
- Clinical depression
- Disorders of diminished motivation
- Encephalitis lethargica
- Sleep apnea
- Sleep deprivation
- Somnolence
- Altered level of consciousness
External links
- The dictionary definition oflethargyat Wiktionary