This is a term derived from the Greek "Poli" which means many and "Dipsia" which means Thirst. The polydipsia refers to the excessive desire for liquid ingestion, especially water. It must be made clear that polydipsia is not a disease, but the cause or the symptom that something could be affecting our body, so it is recommended that blood and urine tests be applied to the patient. Drinking so much water can cause an imbalance in the body's electrolytes and the amount of sodium in the blood.
By ingesting so much fluids the person will really want to go to the bathroom to urinate, that increase in the urge to urinate is what doctors call polyuria, polydipsia and polyuria will be related since it is logical that if you drink so much liquid you have than going to the bathroom several times. When polydipsia is a consequence of having diabetes, it is called polydipsia diabetes. Polydipsia can present in two ways: psychogenic or psychological polydipsia and primary polydipsia. When it comes to psychogenic polydipsia, it is referring to mental disorders, in this case it would be called schizophrenic polydipsia, primary polydipsia occurs when there is dry mouth.
The polydipsia can be caused by several factors which include: eating foods with too much salt or spicy, suffer from diabetes, be taking drugs such as diuretics, suffer from some form of mental disorder, etc. Finally, it is recommended that the person seek medical help, who can give him a diagnosis and thus be able to start a treatment that helps him improve his health and therefore his quality of life.