Welcome to ATD. Thank you for the query.
Some of the possible common medical causes of Increased thirst and urination may include:
Renal tubular acidosis
Squamous cell carcinoma of lung
Congestive heart failure
Consult a physician, he may order blood and urine tests to help provide a diagnosis. These tests may include:
blood glucose test
blood count and blood differential tests
urinalysis and urine osmolality tests
serum calcium, osmolality, and sodium tests
Depending on the test results, your doctor may refer you to a specialist.
All the best.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.