DefinitionDrooling is saliva flowing outside the mouth.Alternative NamesSalivationConsiderationsDrooling is generally caused by:Problems keeping saliva in the mouthProblems with swallowingToo much saliva productionSome people with drooling problems are at increased risk of breathing saliva, food, or fluids into the lungs. This may cause harm if there is a problem with the body's normal reflexes (such as gagging and coughing).Drooling caused by nervous system (neurologic) problems can often be managed with drugs that block the action of the chemical messenger acetylcholine (anticholinergic drugs). In severe cases, people can reduce drooling by injecting botulism toxin, getting high-energy x-rays (radiation) to the glands in the mouth that make saliva (salivary glands), and other methods.Com