What is the small, hard lump on the bone behind the ear?
Nov 28, 2025
Source: Cainiu Health
Dr. Lu Cheng
Introduction
In general, a hard small lump appearing on the bone behind the ear may be caused by sebaceous cysts, swollen lymph nodes, folliculitis, lipomas, fibromas, or other reasons. If the lump continues to grow or is accompanied by symptoms such as pain, it is advisable to seek timely medical evaluation and treatment at a正规 hospital. In daily life, maintain cleanliness of the skin behind the ears and avoid scratching.
Generally, a hard small lump appearing on the bone behind the ear may be caused by sebaceous cysts, swollen lymph nodes, folliculitis, lipomas, fibromas, or other reasons. If the lump continues to grow or is accompanied by pain or other abnormalities, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Detailed explanations are as follows:
1. Sebaceous cyst: When the sebaceous gland ducts in the skin behind the ear become blocked, sebum cannot drain properly and gradually accumulates to form a cyst, presenting as a firm small lump. No special treatment is required; maintain local cleanliness and avoid squeezing. If the cyst is large or affects appearance, surgical removal may be considered.
2. Swollen lymph nodes: Lymph nodes are distributed behind the ears. When the body is invaded by pathogens such as bacteria or viruses, causing infection, the lymph nodes activate their defense mechanisms and become enlarged. No specific medication is usually needed—once the infection is under control, the swelling typically resolves on its own.
3. Folliculitis: Hair follicles behind the ear become infected with bacteria, leading to inflammation, localized redness, swelling, pain, and formation of a hard lump. Topical antibiotics such as mupirocin ointment, fusidic acid cream, or erythromycin ointment may be applied as directed by a physician. Keep the skin behind the ear clean and dry, and avoid scratching.
4. Lipoma: Abnormal proliferation of fat tissue behind the ear forms a benign tumor that feels firm and grows slowly. If the lipoma is small and causes no discomfort, regular observation is sufficient. If it becomes large or compresses surrounding tissues, causing pain or numbness, surgical removal can be considered.
5. Fibroma: Abnormal growth of fibrous tissue behind the ear forms a tumor that feels firm and has clear boundaries. If the fibroma is small and shows no changes, close monitoring is advised. If it increases in size or causes pain, surgical excision is recommended, followed by pathological examination to confirm its nature.
In daily life, maintain cleanliness of the skin behind the ears and avoid scratching; maintain regular作息, eat a balanced diet, strengthen immunity; and undergo routine physical check-ups for early detection and treatment.
