question: Hello doctor, My son (4.3 years old, 21 kg, 109 cm), seems to have a tendency of increased thirst and urination for the past two months. Can I request you to review the below summary and attached reports to help him get well? There are at least 3 to 4 occasions in past two months when he had drunk up to 4 to 5 liters of fluid in a day and urinates at least in an hour up to 3 to 4 times in an hour in the evening. These days he also seemed to have some amount of sweating and hiccups too. Couple of these occasions happened the next day after he has taken some outside food (like noodles). However, there was no loose motion or fever as such. When he urinates 3 to 4 times in an hour, the urine volume is not that much always, neither there was any color or smell. We have also tested his urine routine twice, but nothing obvious was there (attached). We have taken him to a local doctor a couple of times, who did not find anything wrong clinically. His BP comes up as 90/60 and 88/60, while an instant sugar check (after 1.5 hours of light breakfast) shows 132.  He had reported 3 to 4 occasions of a headache and reeling of the head in the past two months or so. He did have some forehead injury (not fall) 3 months ago, which was reviewed by a doctor with antibiotics and the local dressing was done. He has taken two doses of Zentel syrup (5 ml) three months back. He has got two instances of cold, cough, fever in past two months, for which he had taken medicines like Calpol 250 mg (7.5 ml), Xyzal (3.5 ml), Montec LC Kid (4 ml), Ambrolite-S (5 ml) and Lupital (3 ml) since almost past one month.  Apart from the above symptoms, he seems to have moderate stomach pain (around naval chord) since today morning along with vomiting tendency and no appetite. We have given him Domestal Syrup (6 ml) twice, which although prevented vomiting, but he seems too tired, weak and unable to do his daily routine, etc.