Experiencing drowsiness and fatigue is common in daily life, but sometimes it may be caused by serious illnesses. Diabetes, for instance, can lead to fatigue. Below, we introduce the related symptoms of diabetes and other diseases that may cause fatigue.
Fatigue May Signal Diabetes
Fatigue is a symptom commonly described as "lack of energy," "weakness," "drowsiness," "exhaustion," or "weariness." Its causes are diverse, and classifications vary, but it is often divided into physiological fatigue and pathological fatigue.Simply put, physiological fatigue is not caused by disease, while pathological fatigue stems from underlying medical conditions.
Under normal circumstances, glucose serves as the body's primary energy source. However, individuals with diabetes experience either an absolute or relative lack of insulin, preventing proper glucose utilization. Consequently, the body lacks sufficient energy, leading to feelings of fatigue.Additionally, in diabetes, reduced uptake of amino acids by the liver and muscle tissue leads to weakened protein synthesis and accelerated catabolism. This results in a negative nitrogen balance, causing symptoms such as weight loss, fatigue, and diminished tissue repair capacity and resistance.
Furthermore, fatigue in diabetic patients may also arise from the following causes:
1. Cerebrovascular disease: Such as cerebral infarction, a common cause—particularly small infarcts—which can be diagnosed with brain MRI.
2. Hyperglycemia or Hypoglycemia: Poor blood glucose control or significant fluctuations can be life-threatening in severe cases and can be confirmed through blood glucose testing.
3. Water, Electrolyte, and Acid-Base Imbalance: Diabetic patients are prone to acidosis or hypokalemia, both of which cause fatigue and can be diagnosed through blood biochemistry and blood gas analysis.
4. Diabetic Peripheral Neuropathy: A common complication of diabetes, patients experience fatigue alongside impaired light touch sensation. Physical examination may reveal positive findings, and tests like electromyography (EMG) and nerve conduction velocity studies can be performed.
What other conditions can cause fatigue?
1. Endocrine disorders: Including diabetes, hypothyroidism, primary and secondary hyperaldosteronism, primary and secondary adrenal insufficiency, primary and secondary hyperparathyroidism, pheochromocytoma, etc.
2. Neurological disorders: Including cerebral infarction, cerebral hemorrhage, Guillain-Barré syndrome, myasthenia gravis, and spinal cord lesions.
3. Cardiovascular Diseases: Hypertension, coronary heart disease, rheumatic heart disease, congenital heart disease, cardiomyopathy, etc., may all present with fatigue.
4. Digestive System Diseases: Such as cirrhosis, Crohn's disease, ulcerative colitis, hemorrhoids, etc.
5. Hematological disorders: Anemia of various etiologies, leukemia, aplastic anemia, myelodysplastic syndromes, lymphoma, and agranulocytosis.
6. Renal disorders: Various types of glomerulonephritis, pyelonephritis, and uremia.
7. Infectious Diseases: Including infections caused by bacteria, fungi, parasites, viruses, etc., such as pulmonary infections, tuberculosis, various types of hepatitis, influenza, hepatic echinococcosis, neurocysticercosis, etc.
9. Tumors: Fatigue can be a symptom of tumors affecting any system or type.
Therefore, if you suddenly experience drowsiness and fatigue, do not ignore it. For your health, seek medical examination promptly to determine if it stems from another condition, preventing severe consequences from delayed treatment.