Which is a sign or symptom of diabetes mellitus?

Polydipsia, or excessive thirst, is a key sign and symptom of diabetes mellitus. This condition occurs because the body is unable to effectively use glucose, leading to high blood sugar levels. As blood glucose levels rise, the kidneys work to filter and excrete the excess sugar through urine, which can cause dehydration. The resulting fluid loss leads to increased thirst in an attempt to replenish the lost fluids, manifesting as polydipsia.

Recognizing polydipsia as a symptom is crucial for the early diagnosis and management of diabetes, as it reflects the underlying metabolic disturbances associated with the condition. Other common symptoms of diabetes include polyuria (increased urination) and polyphagia (increased hunger), all tied to the body’s struggle to maintain normal glucose levels and metabolic balance.