Hello dear Understand your concern I think it is due to stone in urinary tract that aggravated by dehydration in night. You should consult the urologist for exact diagnosis. Following are the other causes of your problem: Excesssive Alcohol and caffine use, Artificial sweetners and corn syrup, Blood pressor medication, Large dose of vitamin B and C, Intake of food high in sugars, Urinary tract infection, Constipation, Obstruction of the urinary tract by stone and tumour and Neurological disorder: parkinsons disease, multiple sclerosis and brain tumour, steroid intake Risk factor are obesity , diabetes melitus, neurological disorder. I think in your case it is due to stone in urinary tract. Consult the urologist and do the following test: 1. Urine analysis 2. Blood sugars 3. Blood urea, creatinine 4. Clinical examination and measurement of blood pressor and heart rate 5. Cystoscopy 6. Cystogram 7. Pelvic examination 6. CBC, ESR Following are the advice: 1. Bladder training excercise 2. Double voiding technique 3. Scheduled toilet every 3-4 hours 4. Reduce fluid intake and take more solid fluid 5. Avoid alcohol and caffeine 6. Pelvic floor exercis B. drugs 1. Anticholinergic- Oxybutynin 2. Mirabegran C. Medical device You can put urethral insert if not response to drugs and behavior technique. D. Last option is surgery is problem is severe 1. Bladder neck obstruction 2. Artificial urinary sphincter Hope this may help you. Best regards Dr. sagar