Final answer:
Excessive urination and thirst, along with other symptoms like glucosuria and weakness, are indicative of Diabetes Mellitus, resulting from the body's inability to properly manage high blood glucose levels.
Step-by-step explanation:
Excessive urination and thirst, glucosuria, weight loss, nausea, weakness, and irritability are symptoms that are associated with Diabetes Mellitus. These symptoms arise due to high levels of glucose in the blood, which affect kidney function. The kidneys filter glucose from the blood, but when there's too much, it causes water to be drawn into the urine, leading to polyuria (frequent urination) and polydipsia (excessive thirst) as the body attempts to dilute and excrete the excess glucose. This excessive loss of fluids results in dehydration, prompting a continuous need to drink water. Additionally, the cells of the body are unable to utilize the glucose effectively, leading to persistent hunger, known as polyphagia.