In the lymphatic system, the larvae mature into adult worms, where they mate and form nests. These nests cause blockages, resulting in fluid collection, swelling, and fever.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.