Sublingual salivary gland swelling can occur for several reasons that include buildup of crystallized saliva and viral infections such as the flu, according to WebMD. Swollen salivary glands are also a common symptom of ... More »

Symptoms of salivary gland blockage include lump beneath the tongue or chin and difficulty in eating. Infection of the salivary glands may occur causing pus formation and fever, explains Healthline. The condition also le... More »

The parotid gland is a salivary gland, according to WebMD. Humans have a pair of parotid glands located near the mouth and the ears, according to Wikipedia. The parotid glands secrete saliva into the mouth to begin the d... More » Science Human Anatomy Glands & Hormones

The salivary glands exist to produce saliva, a fluid that plays important roles in digestion, pH balance and hygiene. Salivary glands also play an important role in thermoregulation for some other animals, such as dogs. ... More »

Blocked salivary gland ducts are caused by salivary stones, infections, cysts and tumors. Issues arise when salivary glands are blocked, causing problems with swallowing, lubricating the mouth, digestion and bacterial in... More »

Overactive salivary glands produce too much saliva in the mouth, according to WebMD. Salivary glands normally become overactive when a person eats very spicy foods. More »

The main causes for a lump found underneath the jaw include an indication of the presence of bacterial infections, viral infections, infections caused by bug bites, such as Lyme disease, types of noncancerous growths lik... More »