Hello! I've had similar symptoms that prolonged over a year to have been diagnosed. I would suggest talking to your primary care physician about Diabetes Insipidus, if it seems plausible then ask for a referral to an endocrinologist right away! I hope it helps if you go this route.
Thanks for your detailed answer. I visited a urologist and he did digital rectal exam. He also asked me to make a chart of fluid intake and fluid passed as urine (for two days). I made this chart and showed him, I passed out 450 mL of urine in the morning and from this volume, he guessed that my bladder is quite healthy and have good capacity. From this chart, he made his own conclusions, stating that I am quite healthy and I should stop my urge of urination and should go to washroom not before 2 hours. Moreover, he asked me to take a course of Levofloxacin 500 mg for a month. It did not work.
But unfortunately, I am facing the same problem.
If you are only able to get to see a urologist by referral from your doctor, then you need to request your doctor to refer you urgently to see a urologist. A urologist has specialized knowledge and skill regarding problems of the male and female urinary tract and the male reproductive organs.
The urologist may decide to do a cystoscopy and/or arrange for specific imaging tests that show up what is going on inside the urinary tract.
As the antibiotics did not work it may be that they were the wrong type of antibiotic to treat any underlying infection, or you have no bacterial infection.
It may be that you have kidney stone problems or other obstruction inside your penis. The leg pain may be referred pain due to urinary tract problems or may be a different problem altogether.
Although you go to urinate every 5 minutes, do not reduce your fluid intake. You still need to be well hydrated. The recommended amount of fluids (not alcohol) to be drunk during the day is around 2 litres. Your doctor or urologist would advise you whether you should drink more or less than this amount.
Dehydration and not drinking enough water can lead to the formation of kidney stones. A kidney stone can be as small as a grain of sand, but can still cause a lot of pain and can cause infections, blockage and pain.
I suggest you collect your urine into a clear clean glass jar, smell it and look at it. A strong smell can indicate urinary problems. If the urine is cloudy, dark or red - this could be a sign of an infection and blood in the urine. A dark coloured urine can also indicate that you are not hydrated enough and would need to drink more water.
Frequent urination can also sometimes be due to high sugar levels in the blood and an HbA1C blood test would give the average blood sugar levels in your body over a period of 3 months.
Because you have physical symptoms and your doctor has not found the cause, you need further investigation by a urologist. If you have not had your prostate examined, that too should be done.
Make an urgent appointment to see your doctor and ask for an urgent referral to see a urologist. If you are able to make your own appointment to see a urologist, then I suggest you make an urgent appointment to see a urologist.
Hope that the cause of our problem can be found soon so that you can get the appropriate treatment to aid a speedy recovery.
Let me know how you get on.
Best wishes.