Asthenia, also known as Physical Weakness, is the feeling of body fatigue or tiredness. A person experiencing weakness may not be able to move a certain part of their body properly. Asthenia may also result in a lack of energy to move certain, or even all, parts of the body, and can also cause mental fatigue.

Myasthenia or simply muscle weakness, is a lack of muscle strength. The causes are many and can be divided into conditions that have either true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular diseases, such as myasthenia gravis.

Asthenia, lack of strength but also disease) is a medical term referring to a condition in which the body lacks or has lost strength either as a whole or in any of its parts? It denotes symptoms of physical weakness and loss of strength. General asthenia occurs in many chronic wasting diseases (such as tuberculosis and cancer), sleep disorders, or chronic disorders of the heart, lungs, or kidneys, and is probably most marked in diseases of the adrenal gland.

Fatigue is a term used to describe an overall feeling of tiredness or lack of energy. It isn’t the same as simply feeling drowsy or sleepy. When you’re fatigued, you have no motivation and no energy. Being sleepy may be a symptom of fatigue, but it’s not the same thing. Everyone feels tired from time to time. Fatigue is feeling severely overtired. Fatigue makes it hard to get up in the morning, go to work, do your usual activities, and make it through your day. You might have an overwhelming urge to sleep, and you may not feel refreshed after you rest or sleep.