 [ Symptoms ] i woke up with swollen parotid glands [ Disease ] well swelling of salivary glands commonly occurs due to infection leading to parotitis and needs not to be necessarily be due to mumps other common cause can be obstruction in the ducts of the salivary gland leading to pooling of saliva into the glands causing swelling so for confirmation of the cause you should consult an oral physician or an ent physician and get evaluated and a thorough clinical examination and x ray can help in diagnosis and then only appropriate treatment can be advised hope your query is resolved regards