Mumps without fever may be related to recurrent parotitis or chronic obstructive parotitis, both of which are not serious, and it is recommended to go to the hospital to complete the relevant examinations, make a clear diagnosis and take targeted treatment. Recurrent parotitis may be related to factors such as low immunity and poor parotid gland structure, which causes recurrent swelling and pain in the parotid gland. If the patient’s symptoms are mild, they tend to be mainly characterized by recurrent parotid swelling and pain, sticky secretions in the mouth, and some patients may be accompanied by mild symptoms of low-grade fever. Chronic obstructive parotitis is due to blocked secretion of the parotid ducts, resulting in saliva not being able to be normally secreted into the mouth, often after eating, due to a large increase in salivary secretion, which in turn leads to episodes of swelling and pain in the parotid region, with clinical manifestations mainly characterized by localized parotid gland swelling and pain after eating. Redness, swelling, heat and pain may also occur if there is long-term, chronic ductal obstruction causing salivary retention or further infection. Consult your doctor for further treatment.