Hello, Thanks for writing to us, I have studied your case with diligence. Tramadol is known for its side effect of nausea But neck lymph node swelling is not associated with that. Enlarged lymph node in neck is very common condition and needs proper evaluation. Most common reason for enlarged lymph node is usually infection, so we can start antibiotic regime and look for results. There is enlarged lymph node in malignancy also. If there is no improvement then we will need to investigate in form of complete blood count, ESR, CRP, tuberculin test, and Fine needle aspiration cytology or open biopsy. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. If you find this answer helpful do not forget to give rating at end of discussion. Wishing you good health. Take care