Why do elderly people drool

7 Instead of excess saliva, people cannot feel or control their mouth, leading to drooling. Many people in their 80s or older lose some control of. Drooling is normal for toddlers but in adults, drooling can be a sign of infections, neurological conditions, and other medical problems. Learn more. A tonsillar abscess and infectious mono (infectious mononucleosis or glandular fever) are also some of the few causes leading to drooling of the saliva. At.