👉 Urge fluid, also known as nocturnal sialorrhea, is a condition characterized by an excessive production and release of saliva during sleep, particularly at night. This phenomenon is often associated with sleep disorders such as sleep apnea or restless leg syndrome, and it can lead to noticeable drooling, which may cause embarrassment or disrupt sleep. The exact mechanism behind urge fluid is not fully understood, but it is believed to involve hormonal changes and increased parasympathetic nervous system activity during sleep, which stimulates salivary gland secretion. Managing urge fluid often involves addressing underlying sleep issues through medical interventions or lifestyle changes.