###Human: I have a swollen lymph node in neck since birth. Is it something serious? ###Assistant: Hello. These are subcentimeter lymph nodes which usually are benign and harmless. However, if you develop fever, joint pains, rash, change in appetite, weight loss or night sweats this should be investigated further by biopsy or FNAC (fine .needle aspiration cytology). You can also get a repeat ultrasound in the next six months to follow up on the size of these lymph nodes. For more information consult an internal medicine physician online -->