Polydipsia is most commonly a symptom of which condition?

Polydipsia is most commonly a symptom of which condition?

• A. Diabetes mellitus
• B. Hypertension
• C. Anemia
• D. Hypothyroidism

Answer: (A)

Polydipsia means excessive thirst, and it commonly arises when the body becomes dehydrated. In diabetes mellitus, high blood glucose spills into the urine when levels exceed the kidneys’ ability to reabsorb it. Water follows the glucose into the urine (osmotic diuresis), increasing urine volume and leading to dehydration. The body then triggers increased thirst to compensate, making polydipsia a frequent symptom of diabetes mellitus. The other conditions listed—hypertension, anemia, and hypothyroidism—don’t typically cause persistent thirst as a primary sign, so they’re less likely explanations for polydipsia.

Polydipsia means excessive thirst, and it commonly arises when the body becomes dehydrated. In diabetes mellitus, high blood glucose spills into the urine when levels exceed the kidneys’ ability to reabsorb it. Water follows the glucose into the urine (osmotic diuresis), increasing urine volume and leading to dehydration. The body then triggers increased thirst to compensate, making polydipsia a frequent symptom of diabetes mellitus. The other conditions listed—hypertension, anemia, and hypothyroidism—don’t typically cause persistent thirst as a primary sign, so they’re less likely explanations for polydipsia.