Swollen parotid glands

Swollen parotid glands are usually the first signs of the disease, lasting 7-10 days, often swelled for 2-3 days on one side, and the parotid glands also swell on the contralateral side, sometimes the swelling is only unilateral, or the parotid glands are enlarged with submandibular glands , Or even only submandibular gland enlargement without parotid gland enlargement. Opening and chewing, especially when eating acidic foods, the pain worsens.