A small bulge next to the ear may be caused by periauricular lymphadenitis, sebaceous cysts, lipoma and other reasons. 1. Periauricular lymphadenitis: Inflammation and tumors in the throat, parotid gland, ear, head and neck can cause lymph node enlargement next to the ear, and its activity, size and texture are often different. 2. Sebaceous cysts: If the secretion of sebaceous glands next to the ear is obstructed, it may lead to retention of secretion inside, forming cysts and small bulges. 3. Lipoma: Lipoma is a kind of benign tumor, if there is a small bulge next to the ear, it may be a symptom of lipoma. If you have a small bulge next to your ear, it is recommended that you actively seek medical attention and undergo a systematic examination to make a clear diagnosis.