A bulge behind the ear in children may be caused by conditions such as enlarged lymph nodes, lipomas, and sebaceous cysts.
1. Enlarged lymph nodes: most of the swollen lymph nodes are caused by pathogenic infections, such as bacteria, viruses, rickettsiae, etc. It may also be caused by lymphoma and plasma cell tumor, and patients with enlarged lymph nodes will have localized lumps, which will be manifested as bulging bags.
2. Lipoma: Lipoma is a kind of soft tissue benign tumor, may be caused by heredity, local chronic inflammation, systemic lipid metabolism abnormalities and other factors can also induce this disease, the disease occurs behind the ear, there will be subcutaneous lumps, manifested as a bulge.
3. Sebaceous cysts: sebaceous cysts are a benign skin lesion, due to local follicle sebaceous gland mouth blockage, making the sebum accumulation formation, the disease occurs behind the ear, there will be a round, hardness of the drum.
There are many reasons for children to have a bulge behind the ear. Parents should be alert to localized lesions, bring their children for examination in time, and cooperate with doctors for active treatment.