Fatigue is known as constant fatigue that remains constant and continuous, and it also causes a feeling of unjustified and continuous exhaustion, and exhaustion can be described as severe physical or mental fatigue, or both, and the person may describe his feeling of heaviness in the body and limbs and difficulty in movement, and the feeling of running out of energy as it is The case is the feeling of fatigue associated with influenza, and many people may feel mental fatigue as well, especially when they cannot think normally and lose focus or motivation, and others may feel emotional exhaustion that makes them feel exhausted, emaciated, or want to cry.[1][2] ] It is worth noting that fatigue may be part of chronic fatigue syndrome, which is a condition in which fatigue lasts for six months or more, without being associated with other diseases or health conditions, and symptoms of chronic fatigue syndrome can include: pain Muscles, memory problems, headaches, and pain in the lymph nodes.[3]

Causes of fatigue Medical causes Medical causes of fatigue include the following:[4][5] Metabolic or endocrine problems: These include anemia, hypothyroidism, diabetes mellitus, electrolyte disorders, poor kidney function, liver disease, and Cushing's disease. : Cushing's disease). Some types of infections: These include infectious mononucleosis, hepatitis, tuberculosis, cytomegalovirus, HIV infection, influenza, malaria, And many other infectious diseases. Some types of medicines: such as; Antidepressants, anti-anxiety medications, sedatives, withdrawal symptoms, antihistamines, steroids, and some blood pressure lowering medications. Heart, lung and digestive diseases: These include pneumonia, arrhythmias, asthma, chronic obstructive pulmonary disease, coronary artery disease, congestive heart failure, gastroesophageal reflux, and inflammatory bowel disease. Sleep problems: These include sleep apnea, narcolepsy, and insomnia. Certain chemicals: Vitamin deficiencies, mineral deficiencies, intoxication, and consuming too many caffeinated or alcoholic beverages can disrupt normal sleep, especially if taken close to bedtime. Other diseases and treatments: These include cancer, chemotherapy, myalgic encephalomyelitis, radiotherapy, chronic fatigue syndrome, fibromyalgia, systemic lupus, and arthritis. Rheumatoid arthritis, obesity, large amounts of blood loss, and weak immunity. Chronic pain: Chronic pain leads to waking up all night, which prevents getting an adequate amount of rest during the night, and leads to fatigue during the day. Myofascial pain is one of the most important causes of chronic pain that affects sleep and causes fatigue.Reasons related to lifestyle Common lifestyle factors that can cause fatigue include: [6] Lack of sleep: An adult needs approximately eight hours of sleep every night, and lack of sleep is one of the causes of fatigue. Oversleeping: Sleeping more than 11 hours per night may lead to excessive daytime sleepiness. Sleep disorders: A person may suffer from a sleep disorder for several reasons, such as: noisy neighbors, waking up of young children at night, snoring, and an uncomfortable sleep environment. Sedentary lifestyle: Physical activity improves physical fitness, health, and well-being, reduces stress, increases energy levels, and aids sleep. Bad diet: Low-calorie diets or low-carbohydrate diets, and fast foods, such as chocolate bars or caffeinated drinks, are foods that cause fatigue. As it does not provide an adequate amount of energy. personal factors such as; Too many obligations, such as working two jobs or financial problems. Work-related causes Common causes of work-related fatigue include the following: [6] Night shift work: The human body is prepared to sleep during the night, and this is regulated by a small part of the brain known as the biological clock, and night shifts change the work of the biological clock Which causes fatigue during the day. Long working hours: hard physical work, irregular work hours, stressful work environment such as: excessive noise or extreme temperatures, working alone, with little or no interaction with others, or fixed focus on a repetitive task. Workplace stress: Fatigue can be caused by job dissatisfaction, heavy workload, conflicts with superiors or colleagues, bullying, constant change, or threats to job security. Unemployment: Unemployment places many financial pressures on a person, feelings of failure or guilt, and emotional exhaustion that can lead to stress, anxiety, depression, and fatigue. Psychological reasons.Psychological causes Studies indicate that psychological factors affect 50% of people who suffer from fatigue, and these factors include the following: [6] Depression: This disease is characterized by severe and prolonged feelings of sadness, depression and despair, and people with depression suffer from chronic fatigue. Anxiety and tension: Stress and chronic anxiety cause a feeling of excessive fatigue as a result of the secretion of the adrenaline hormone, which depletes the body and causes fatigue. Grief: Grief over the loss of a loved one causes a wide range of emotions including shock, guilt, depression, hopelessness, and loneliness. Doctor's review A doctor's review should be made if fatigue is accompanied by one or more of the following symptoms: [7] [8] There are no other reasons to explain the feeling of fatigue. Body temperature higher than normal. Unexplained weight loss. Extreme sensitivity to low temperatures. Sleep related problems. feeling depressed Persistent fatigue for at least two weeks, despite multiple efforts to address the most common causes of fatigue such as lack of rest, poor eating habits, and irritability. hematemesis severe headache Feeling pain in the chest area. Fainting. Arrhythmia. shortness of breath. Severe pain in the abdomen, back, or pelvis. Thinking of suicide or self-harm. Thinking of harming others