A person suffers from frequent urination feels thirsty and there is no glucose in the urine ,what may be the cause

Options

A. Hyposecrection of posterior lobe of pituitary
B. Hypersecrection of posterior lobe of pituitary
C. Hyposecretion of adrenal gland
D. Hyper secrection of thyroid

Answer

### Step-by-Step Solution:

1. **Understanding the Symptoms**:
- The person is experiencing frequent urination and excessive thirst. These symptoms can be indicative of a condition related to fluid regulation in the body.

2. **Analyzing the Urine**:
- The absence of glucose in the urine is a key detail. In diabetes mellitus, glucose is typically present in the urine due to high blood sugar levels. Since there is no glucose in the urine, this suggests that the person is not diabetic.

3. **Considering Possible Causes**:
- Given the symptoms and the absence of glucose, we need to consider other medical conditions that could lead to frequent urination and thirst. The options provided include:
- Hyposecretion of the posterior lobe of the pituitary gland
- Hyposecretion of the adrenal gland
- Hyposecretion of the thyroid gland

4. **Identifying the Correct Cause**:
- The most likely cause of these symptoms, given that the person is not diabetic, is **hyposecretion of the posterior lobe of the pituitary gland**. This condition leads to a deficiency in the secretion of antidiuretic hormone (ADH), which is responsible for regulating water balance in the body.

5. **Understanding the Role of ADH**:
- ADH promotes the reabsorption of water in the kidneys. If there is a hyposecretion of ADH, the kidneys will not reabsorb enough water, leading to increased urine output (frequent urination) and consequently causing the person to feel thirsty.

6. **Conclusion**:
- Therefore, the cause of the symptoms (frequent urination and thirst with no glucose in urine) is likely due to the **hyposecretion of the posterior lobe of the pituitary gland**, resulting in low levels of ADH.

### Final Answer:
The cause of the symptoms is **hyposecretion of the posterior lobe of the pituitary gland**, leading to decreased levels of antidiuretic hormone (ADH).

---