There is no direct link or causal relationship between hard lumps in the ear and AIDS. Swollen lymph nodes in front of the ear and behind the ear may appear during the period of asymptomatic HIV infection, accompanied by generalized lymph node enlargement, fever, night sweats, rash, etc. Swollen lymph nodes in the ear alone cannot be identified as AIDS. Hard lumps in the ear are mostly lumps formed by local inflammatory reaction, cysts and scarring, and are commonly seen clinically in the following cases: 1. Auricular pseudocysts: cysts are mostly elevated in the auricle and gradually increase in size with pressure fluctuations and swelling, which may be accompanied by itching and burning and slight pain. The boundary of the cyst is clear and the skin color is normal. 2. Purulent chondromalacia of the ear: Initially painful and swollen, with the development of the disease, the redness and swelling gradually expand, the pain is severe, the pressure fluctuates, and may be accompanied by high fever and chills. 3. Cerumen embolism of the external ear canal: It occurs in the ear canal, and some of the hard cerumen can be dislodged from the ear canal as brownish-black or yellowish-brown masses. It can cause hearing loss, tinnitus, ear pain and other symptoms. 4. Boils: They can grow on the auricle or at the cartilage of the external ear canal, and because the skin tissue of the external ear canal is too thin and the nerves are very sensitive, they can cause severe pain in the early stage, and when they block the external ear canal, they are accompanied by tinnitus and ear stuffiness. 5. Sebaceous cysts: They mostly occur in the earlobe and appear as elastic lumps that can be pushed but are not very active, with small black spots in the central part. It is a small black spot in the central part of the ear that can exclude slag-like secretions and has an odor; 6. Keloid: It occurs mostly in people with keloid body, after ear piercing or trauma, the granulation tissue at the wound grows abnormally and forms a scar that protrudes from the skin. In addition, if swollen lymph nodes in the ear occur, they may also be caused by inflammatory reactions such as tonsillitis, otitis media, gingivitis, etc. It is recommended to seek medical advice to clarify the cause and carry out targeted treatment. If the patient has recently had high-risk sex, he or she can also go to the hospital for examination to rule out whether it is an AIDS lesion.