Why do I often feel thirsty and tired?

The possible causes of constantly feeling thirsty and tired may involve multiple factors: 1. Diabetes: When blood sugar levels rise, patients often experience symptoms such as excessive thirst, general fatigue, and drowsiness. This occurs because high blood glucose leads to fluid loss in the body and affects energy metabolism. 2. Yin deficiency with internal heat: Characterized by dry mouth and thirst, heat sensations in the palms, soles, and chest, along with fatigue and sleepiness, this condition is usually related to an imbalance of Yin and Yang within the body. 3. Sjögren's syndrome: An autoimmune disease that affects the salivary and lacrimal glands, leading patients to frequently feel thirsty. 4. Damp-heat in the spleen and stomach: May present with symptoms including thirst, sticky mouth, bitter taste, accompanied by abdominal fullness, dizziness, and fatigue. 5. Lifestyle factors: Excessive alcohol consumption, common colds, fever, or overexertion can also lead to thirst and fatigue. If these symptoms persist for a prolonged period, it is recommended to seek medical attention for a comprehensive examination to determine the underlying cause and initiate appropriate treatment.