The diagnosis of mumps or lymphadenitis requires differential diagnosis based on symptoms, laboratory tests and so on. 1. Symptoms: parotitis is mainly centered on the enlargement of the parotid gland in the earlobe, and when the inflammation spreads, the whole parotid area is obviously enlarged, with unclear edges; lymphadenitis is characterized by the phenomena of redness, swelling, heat and pain in the local lymph nodes, and the enlargement of several lymph nodes, which can be fused to form a larger lump. 2. Laboratory tests: mumps laboratory tests can see a significant increase in leukocytes and neutrophils; lymphadenitis laboratory tests, one situation is a fungal infection, lymphocytes increased abnormally, and the other situation is similar to the results of mumps, leukocytes and neutrophils increased. Whether it is mumps or lymphadenitis, you need to consult a doctor to confirm the diagnosis after a professional examination, pay attention to your diet, avoid spicy and stimulating food, and pay attention to rest.