Polydipsia often goes with hypokalemia). Antipsychotics can have side effects such as dry mouth that may make the patient feel thirsty. Primary polydipsia describes excessive thirst and water intake caused in the absence of physiological stimuli to drink. This includes both psychogenic primary polydipsia and non-psychogenic primary polydipsia, such as in patients with autoimmune chronic hepatitis with severely elevated globulin levels. Psychogenic polydipsia is an excessive water intake seen in some patients with mental illnesses such as schizophrenia, and/or the developmentally disabled. It should be taken very seriously, as the amount of water ingested exceeds the amount that can be excreted
Excessive daytime sleepiness Excessive daytime sleepiness Excessive daytime sleepiness (EDS) is characterized by persistent sleepiness and often a general lack of energy, even during the day after apparently adequate or even prolonged nighttime sleep. EDS can be considered as a broad condition encompassing several sleep disorders where increased sleep is a symptom, or as a symptom of another underlying disorder like narcolepsy, idiopathic hypersomnia, sleep apnea or a circadian rhythm sleep disorder. Some persons with EDS, including those with hypersomnias like narcolepsy and idiopathic hypersomnia, are compelled to nap repeatedly during the day; fighting off increasingly strong urges to sleep during inappropriate times