Fatigue means a state of extreme tiredness or exhaustion that goes beyond normal tiredness. It is characterized by a lack of energy, physical weakness, and a feeling that even simple tasks require more effort than usual. Fatigue can affect both the body and mind, making it difficult to perform daily activities or stay focused. Unlike ordinary tiredness, fatigue often does not improve with rest or sleep and can last for a prolonged period
. Medically, fatigue is considered a symptom rather than a disease itself and can be caused by various factors including medical conditions (like infections, chronic diseases, depression), lifestyle habits (such as poor sleep, stress, alcohol use), or treatments (like chemotherapy)
. It differs from sleepiness, which is the tendency to fall asleep; fatigue is more about an overwhelming sense of weariness and lack of motivation
. In summary, fatigue is a persistent and severe form of tiredness that impairs normal functioning and may signal underlying health issues
