A small hard lump with pressure and pain on the right side of the neck can be caused by lymphadenitis, thyroiditis, fibroma and other diseases, which can be treated by medication and surgery. 1. Lymphadenitis: Lymph nodes are the main immune organs of the human body, when infected by bacteria, viruses and other pathogens, local lymph nodes can appear inflammatory reaction, which can appear as a hard lump in the neck with pressure and pain. Cefradin, cefixime and other anti-infective drugs can be taken orally under the guidance of the doctor, and aspirin and other analgesic antibacterial drugs can also be applied. 2. Thyroiditis: Thyroiditis caused by genetic factors, endocrine disorders and insufficient iodine intake, etc., can appear as a hard lump in the neck with pressure and pain. If the condition is mild, the patient can be observed regularly, and if the symptoms are obvious, the patient can be treated with drugs such as thyroxine sodium tablets under the guidance of the doctor. 3. Fibroma: Hormone level changes, viral infections and skin aging and other factors can cause fibroma lesions in the fibrous connective tissue of the neck, and the enlargement of the fibroma can cause pain symptoms after local compression. After the occurrence of the disease need to consult a doctor to clarify the condition, usually need to perform surgical resection treatment. When there is a small hard lump on the right side of the neck, it is necessary to consult a doctor in time, and under the guidance of a specialist doctor, it will help to relieve the uncomfortable symptoms as soon as possible.