Hypoglycemia: This condition is characterized by low blood sugar levels, which can cause sweating, thirst, and hypothermia. The body's response to low glucose levels can lead to these symptoms, making hypoglycemia a plausible explanation.

Dehydration: Excessive sweating and thirst are hallmark symptoms of dehydration. Although the patient is otherwise stable, dehydration could be a contributing factor to the hypothermia.
Infection: Certain infections, such as sepsis, can cause hypothermia, sweating, and thirst. The patient's stability suggests that this might not be the primary diagnosis, but it remains a possibility.
Medication Side Effects: Certain medications, such as beta-blockers or sedatives, can cause hypothermia and excessive sweating as side effects.

Septic Shock: Although the patient is stable, septic shock is a life-threatening condition that can present with hypothermia, sweating, and thirst. It is crucial to rule out this diagnosis due to its high mortality rate.
Myocardial Infarction: Cardiac events, such as a heart attack, can cause hypothermia, sweating, and thirst. It is essential to consider this diagnosis, especially in patients with cardiovascular risk factors.
Environmental Exposure: Accidental hypothermia due to environmental exposure (e.g., cold water or air) can cause these symptoms. It is vital to investigate the patient's recent activities and environment.

Adrenal Insufficiency: This condition, also known as Addison's disease, can cause hypothermia, sweating, and thirst due to the adrenal gland's inability to produce sufficient hormones.
Pheochromocytoma: A rare tumor of the adrenal gland, pheochromocytoma can cause episodic sweating, thirst, and hypothermia due to the excessive release of catecholamines.
Hypothyroidism: Severe hypothyroidism can cause hypothermia, but it is less likely to cause excessive sweating and thirst. However, it remains a rare possibility that should be considered in the differential diagnosis.