Hard bumps in the earlobe may be sebaceous cysts, keloids, mosquito bites and other diseases, and can be registered to the Department of Ear Surgery, Otorhinolaryngology, Pentacenter, Dermatology, etc., and you need to choose the right department according to the specific conditions of the hospital you are visiting. 1. Ear Surgery: For specialized hospitals, the division of departments is particularly fine, including ear surgery, the appearance of bumps in the earlobe can be directly consulted in the department. 2. Otolaryngology: Most general hospitals have an ENT department, but not an ear surgery department, so you can directly consult the ENT department for treatment. 3. Pentacenter: some general hospitals, departmental division is not fine, only the pentacenter, with earlobe lumps, generally can also be consulted in the department. 4. Dermatology: mosquito bites can be registered to the Department of Dermatology. In short, the emergence of earlobe bumps recommended regular hospitals, you can consult the local hospital to determine the consultation department.