DIABETES mellitus, which is caused by high sugar levels in the body and which you always check for, is not the only cause of excessive thirst. Another type called diabetes insipidus could be the validation for your excessive thirst.
Dear Doctor, I always drink about five litres of water a day. When I take less, I get a severe headache, become very weak and cannot think straight. Whenever I go for a blood sugar check-up, I am in the normal range of five to six. What is the problem? Karuhanga
Dear Karuhanga, DIABETES mellitus, which is caused by high sugar levels in the body and which you always check for, is not the only cause of excessive thirst. Another type called diabetes insipidus could be the validation for your excessive thirst.
This type of diabetes causes electrolyte imbalances that lead to an abnormal functioning of the nervous system which might be the reason for the invariable headaches and weakness when you do not or take less water. See a doctor for assessment.