Primary polydipsia rare non-psychogenic causes. An example is polydipsia found in patients with autoimmune chronic hepatitis with severely elevated globulin levels. Evidence for the thirst being non-psychogenic is gained from the fact that it disappears after treatment of the underlying disease. Psychogenic polydipsia is also observed in some non-human patients, such as in rats. Primary polydipsia Primary polydipsia is a form of polydipsia characterised by excessive fluid intake in the absence of physiological stimuli to drink. This includes psychogenic polydipsia (PPD – not to be confused with postpartum depression), which is caused by psychiatric disorders, often schizophrenia, and often accompanied by the
Polydipsia in birds Polydipsia in birds Polydipsia is an excessively large water intake. Its occurrence in captive birds has been recorded, although it is a relatively rare abnormal behaviour. Polydipsia can be the result of a bird having ingested a toxin, or overconsumption of natural substances. For example, in pet birds, crackers, snack items, chips, fast foods, and canned vegetables (unrinsed) if eaten in sufficient quantities may cause a mild salt toxicity (5-10 times requirement) and subsequent polydipsia. Polydipsia can result from zinc poisoning to which caged birds may be particularly susceptible because of the zinc coating often used on birdcage bars. Polydipsia