What causes lymphadenopathy? blood and mri all clear. can i have any other treatment to reduce the glands?

Many possiblities: Lymph nodes enlarge for many reasons, often because they are fighting inflammation, which is one of their primary functions, but they are also susceptible to primary tumors or metastatic malignancies, non-infectious granulomatous disorders like sarcoidosis and others. In order to determine the cause they may have to be biopsied, although a full evaluation of your health is warranted. Good luck.

Swollen lymph node: Lymphadenopathy refers to swollen/ enlargement of lymph node. It can be caused by many things like infection, inflammation, autoimmune problems, trauma, malignancy both liquid cancer and solid cancer etc. It could be single, multiple, painful, painless. Do you have any other symptoms? Unxeplained weight loss, fevers, chils etc? Where is the location of the lymph nodes? Why mri?