Fatigue (also called exhaustion, languor, weariness or lack of energy) is a subjective feeling of tiredness that is distinct from weakness and has a progressive onset. Unlike weakness, fatigue can be alleviated by periods of rest. Fatigue can have physical or mental causes.
Physical fatigue is the transient inability of a muscle to maintain optimal physical performance and is made more severe by strenuous exercise.
Mental fatigue is a transient decrease in peak cognitive performance resulting from prolonged periods of brain activity. It may manifest itself as drowsiness, lethargy, or attention fatigue.
Medically, fatigue is a non-specific symptom, which means that it has many possible causes.
It is considered a symptom, rather than a sign because it is only a subjective feeling reported by the patient, rather than an objective observation made by others. Fatigue and “feeling tired” are often confused.
Medical efficiency of cannabis
Studies show that cannabinoids found in medicinal cannabis can greatly help relieve symptoms of fatigue, especially for people suffering from chronic fatigue syndrome.