What makes the person feels thirsty and pee all time?

Several medical conditions and factors can cause a person to feel thirsty and pee all the time. Here are some common causes:

Diabetes insipidus: This condition occurs when the body doesn't produce enough or is resistant to the hormone vasopressin (also known as antidiuretic hormone). Vasopressin helps the kidneys to retain water, so without it, the body produces large amounts of dilute urine, leading to frequent urination.

Diabetes mellitus (uncontrolled): In diabetes mellitus, the body doesn't produce enough insulin or doesn't use insulin effectively, leading to high blood sugar levels. These high blood sugar levels can cause the body to draw water from tissues to dilute the sugar in the blood, resulting in increased thirst and urine output.

Kidney disease: Various kidney diseases, such as chronic kidney disease (CKD) or kidney failure, can impair the kidneys' ability to concentrate urine. This leads to an increased production of dilute urine and frequent urination.

Certain medications: Some medications can cause increased thirst and urination as side effects. Examples include diuretics (used to treat high blood pressure or fluid retention), lithium, corticosteroids, and some chemotherapy drugs.

Overhydration: Drinking excessive amounts of fluids, particularly water, can temporarily cause increased thirst and urination as the body tries to maintain fluid balance. However, unless there is an underlying medical condition, overhydration usually doesn't cause ongoing thirst and frequent urination.

Excessive sweating: Profuse sweating, such as during intense exercise, hot weather, or certain medical conditions (e.g., hyperthyroidism), can lead to fluid loss and increased thirst. The body attempts to replenish lost fluids by stimulating thirst and increasing urine output.

In some cases, increased thirst and urination can be associated with certain infections, hormone imbalances, or even anxiety. It's essential to consult a healthcare professional if you experience persistent and bothersome thirst and frequent urination to identify the underlying cause and receive appropriate treatment or management.