For example, a blood glucose level can be used to detect diabetes. A blood test called a chem-7 includes a serum sodium test that can detect hypernatremia. A blood alcohol level test can detect alcohol use. An x-ray test called a cranial CT scan may be done if brain damage is suspected. Long-term effects are related to the cause.
Uncontrolled diabetes can cause damage to many bodily organs and even result in death.
Cases due to dehydration can usually be treated successfully without long term effects. A person with psychogenic polydipsia can sometimes develop dangerous salt imbalances due to excessive water drinking. Excessive thirst is not contagious and poses no risks to others. If the cause of excessive thirst is dehydration due to an infection, the infection may be contagious. Treatment is directed at the cause.