lethargy symptoms
Lethargy can cause some or all of the following symptoms: 1  changes in mood. 2  decreased alertness/ability to think. 3  fatigue. low energy.  sluggishness.
Lethargy is a symptom that causes you to feel sleepy or fatigued and sluggish. This sluggishness may be in terms of movements or in thinking. Youâre described as lethargic if you have these symptoms. Lethargy can be related to an underlying physical or mental condition.