A small bump under the neck may be a viral wart, which can be treated with medication and physical therapy; it may also be a sebaceous cyst, lipoma, etc., which can be treated with surgery; it may also be a folliculitis, which can be treated with topical medication. 1. Viral warts: flat warts and common warts caused by human papilloma virus infection can also lead to a small bump under the neck, which can be treated with topical tincture of onychomycetin, imiquimod ointment, etc. Physical therapy can be done with laser, freezing, electrocautery and other measures. 2. Sebaceous cysts, lipomas: Sebaceous cysts, lipomas and other benign occupational diseases can also lead to a small lump under the neck, which can be surgically removed. 3. Folliculitis: folliculitis caused by bacterial or fungal infection of the skin can also lead to a small bump on the lower part of the neck, which can be treated with topical antibiotics such as erythromycin ointment, mupirocin ointment, or antifungal drugs such as ketoconazole and miconazole cream. There may be other reasons for the growth of small bumps on the lower part of the neck, and you need to go to the regular hospital for examination in a timely manner, to clarify the cause of the disease, and follow the doctor’s instructions for treatment. Drugs need to be used in accordance with medical advice.