What is the term for excessive thirst?

The term for excessive thirst is polydipsia. This condition is often associated with various medical conditions, including diabetes mellitus and diabetes insipidus, where the body experiences increased fluid needs and a subsequent increase in thirst. Understanding this term is crucial for those in the field of brain injury rehabilitation, as certain neurological disorders or the effects of medications can influence a patient's thirst response, leading to polydipsia.

The other terms listed refer to different medical conditions. Polyuria refers to an increased production of urine, which can also be linked to diabetes but is distinct from thirst. Polydipsi seems like a misspelling of polydipsia and is not formally recognized in medical terminology. Polio, short for poliomyelitis, is a viral disease that can affect motor neurons, leading to paralysis and has no relation to the concept of thirst. Understanding these distinctions helps in recognizing the specific symptoms and conditions that can affect individuals, especially those with brain injuries.