Why Do People Feel Exhausted?

Sudden feelings of tiredness may be caused by thyroid dysfunction, myasthenia, excessive stress, and dehydration. Pathological factors especially contribute to physical fatigue, and require the treatment of the underlying disease. If the cause is stress or dehydration, it can be adjusted through daily life, such as resting and recuperating for a period of time to alleviate the symptoms of fatigue.

Hypothyroidism manifests as fatigue, lack of energy, facial swelling, sallow complexion, and sparse hair.

Myasthenia can also lead to fatigue symptoms, such as myasthenia gravis. Various types of muscle weakness symptoms can cause fatigue, including muscle, neuromuscular junction, and neurological diseases. Muscle diseases are most commonly seen as muscular dystrophy, while neurological diseases are more commonly seen as multiple peripheral neuropathies and Guillain-Barre syndrome.

Excessive mental stress can make people look tired and lack energy. If stress is not properly relieved, it can easily lead to neurasthenia, manifesting as fatigue and lack of energy. To alleviate this symptom, it is important to properly release stress.

Dehydration can also lead to feelings of fatigue and weakness, and can even induce various diseases. Water is an essential substance for maintaining human life activities, and dehydration has many adverse consequences. Dehydration can prevent the normal excretion of metabolic waste, which can accumulate in the body and easily cause feelings of fatigue.