Patients with symptoms of pain on the side of the ear common causes are as follows: 1, may be bacterial infection caused by acute cellulitis, patients with soft tissue skin infection can appear local redness, swelling, heat, pain; 2, may be suffering from sebaceous cysts, patients with sebaceous cysts, due to sebaceous gland duct obstruction, subcutaneous cysts will be formed, and if the secondary bacterial infection, there may be localized pain; 3, May be suffering from viral parotitis, the patient mainly manifests as one side or both sides to the parotid gland in the center of the earlobe is swollen, and can appear pain, fever. In addition, there may also be headache, cold, muscle pain, limb weakness, nausea, vomiting and other symptoms. Patients with this condition should pay attention to rest and avoid exertion, take a light diet and avoid spicy and stimulating food. Except for that, they need to go to the hospital for further examination and targeted treatment according to the cause.